What you should know when choosing non-toxic hair dye on Welpr:

  • Only the cleanest products make it onto Welpr.
  • We use a score called the Welpr Rating to rank each product.
  • The Welpr Rating is based on math, not opinion, ensuring it's free from human bias.
The Welpr Rating is determined by a scoring formula. The formula takes into account the products safety, user satisfaction, and eco-ethical standing. Click here to learn more.
Our Methodology and Ratings

Find Non-Toxic Hair Dye

Third-party certifications are key indicators of a product's safety, ethics, and environmental impact. Click the icon to verify the certification.

Highlights aren't always verifiable, so you're trusting the brand when they say "lead free", etc. If the highlight icon is "clickable", it means we've verified the highlight.

User satisfaction is calculated using online reviews and a Bayesian average across all personal care and cosmetic products on Welpr.

Henna Hair Color & Conditioner - Light Mountain

Henna Hair Color & Conditioner - Light Mountain
Welpr Rating
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Welpr rating icon
4.95
/5
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Certifications

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<p>Products rated EWG-1 indicate a top choice for personal care products, have a low potential hazard rating, and good or robust ingredient transparency. <a href="https://www.ewg.org/skindeep/search/?search=Light+Mountain+Natural+Hair+Color+%26+Conditioner" target="_blank">Source</a>.</p>
<p>The Leaping Bunny certification assures that products are genuinely cruelty-free, verified through rigorous audits and a comprehensive Supplier Monitoring System. <a href="https://www.leapingbunny.org/brand/light-mountain" target="_blank">Source</a>.</p>

Highlights

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<p>The Made in USA label indicates that a product has substantial U.S. content and manufacturing.</p>

User Satisfaction

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We only include products on Welpr that are the best of the best. An EXCELLENT user satisfaction score indicates the product is in the top third of the best products.
Est. Price
$22.85

Product Details

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  • Strengthens and nourishes hair while gently coloring
  • Contains organic henna leaf powder and pure botanicals
  • Ammonia-free, PPD-free, metallic-salt free, and peroxide-free
  • Vegan-friendly and cruelty-free, never tested on animals
  • Developed by premier henna experts with decades of experience

Pros & Cons

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Pros Mentioned

  • Vibrant
  • Natural
  • Healthy

Cons Mentioned

  • Messy

Ingredients

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Ingredients can vary by product variation and may change at any time by the manufacturer. For the most complete and up-to-date list of ingredients, refer to the product packaging.


To analyze individual ingredients, use INCIDecoder.


Ingredients: Lawsonia Inermis (Henna) Leaf Powder*, *Certified Organic

Third-party certifications are key indicators of a product's safety, ethics, and environmental impact. Click the icon to verify the certification.

Highlights aren't always verifiable, so you're trusting the brand when they say "lead free", etc. If the highlight icon is "clickable", it means we've verified the highlight.

User satisfaction is calculated using online reviews and a Bayesian average across all personal care and cosmetic products on Welpr.

Color Me Organic 100% Natural Herbs Long Lasting Hair Color - Radico

Color Me Organic 100% Natural Herbs Long Lasting Hair Color - Radico
Welpr Rating
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Welpr rating icon
4.75
/5
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Certifications

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<p>The Made Safe certification ensures that products are free from harmful chemicals and prioritize human health and ecosystem safety. <a href="https://madesafe.org/collections/radico-colour-me-organic" target="_blank">Source</a>.</p>
<p>The USDA Organic certification confirms that agricultural products meet strict organic standards, ensuring sustainable practices from farm to consumer.</p>

Highlights

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<p>The Vegan label indicates that a brand says their product does not contain animal-derived ingredients, but without certifications such as Certified Vegan, it cannot be verified.</p>

User Satisfaction

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We only include products on Welpr that are the best of the best. A GOOD user satisfaction score indicates the product is in the bottom third of the best products.
Est. Price
$14.29

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Pros & Cons

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Pros Mentioned

  • Organic
  • Effective
  • Healthy

Cons Mentioned

  • Smell

Ingredients

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Ingredients can vary by product variation and may change at any time by the manufacturer. For the most complete and up-to-date list of ingredients, refer to the product packaging.


To analyze individual ingredients, use INCIDecoder.


Ingredients: Lawsonia Inermis (Henna), Indigofera Tinctoria (Indigo), Rubia Tinctorum (Manjistha), Phyllanthus Emblica (Amla), Eclipta Prostrata (Bhringraj), Hibiscus Rosa-sinensis (Hibiscus), Trigonella Foenum-graecum (Methi)

Third-party certifications are key indicators of a product's safety, ethics, and environmental impact. Click the icon to verify the certification.

Highlights aren't always verifiable, so you're trusting the brand when they say "lead free", etc. If the highlight icon is "clickable", it means we've verified the highlight.

User satisfaction is calculated using online reviews and a Bayesian average across all personal care and cosmetic products on Welpr.

Henna Cream - Surya Brasil

Henna Cream - Surya Brasil
Welpr Rating
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Welpr rating icon
4.7
/5
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Highlights

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<p>The Cruelty-Free label indicates that a product says their product is free from animal testing, but without certifications such as PETAs Beauty Without Bunnies or Leaping Bunny, it cannot be verified.</p>
<p>The Vegan label indicates that a brand says their product does not contain animal-derived ingredients, but without certifications such as Certified Vegan, it cannot be verified.</p>

User Satisfaction

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We only include products on Welpr that are the best of the best. An EXCELLENT user satisfaction score indicates the product is in the top third of the best products.
Est. Price
$13.00

Product Details

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  • Won the Best of Natural Beauty Awards.
  • Made with ethically-harvested botanicals.
  • Strengthens and moisturizes hair during the dyeing process.
  • Contains antioxidants for vibrant color and deep conditioning.
  • Non-toxic formula free from ammonia, peroxide, and other chemicals.
  • Suitable for colored and damaged hair.
  • Offers semi-permanent coloring, lasting up to 12 washings.
  • Provides impeccable gray hair coverage.
  • Available in 15 vibrant colors.
  • Includes pre-mixed hair color, a pair of plastic gloves, a plastic cap, and directions for use in the kit.

Pros & Cons

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Pros Mentioned

  • Natural
  • Effective
  • Easy

Cons Mentioned

  • Messy

Ingredients

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Ingredients can vary by product variation and may change at any time by the manufacturer. For the most complete and up-to-date list of ingredients, refer to the product packaging.


To analyze individual ingredients, use INCIDecoder.


Ingredients: Aqua, Propanediol, Cetearyl Alcohol, Cetrimonium Chloride, Hc Blue Nº 2, Dehydroacetic Acid, Benzyl Alcohol, Sorbitol, Hc Yellow Nº 4, Orbignya Oleifera Seed Oil, Tocopherol, Hydroxyethylcellulose, Sodium Phytate, Disperse Black 9, Hc Red Nº 3, Achillea Millefolium Extract (Aquiléia), Aloe Barbadensis Leaf Extract (Aloe Vera), Arnica Montana Flower Extract (Arnica), Bertholletia Excelsa Seed Extract (Brazil Nut), Corylus Avellana Seed Extract (Hazelnut), Daucus Carota Sativa Root Extract (Carrot), Euterpe Oleracea Fruit Extract (Açaí), Genipa Americana Fruit Extract (Jenipapo), Lawsonia Inermis Leaf Extract (Henna), Malphigia Glabra Fruit Extract (Acerola), Malva Sylvestris Leaf Extract (Malva), Paulinia Cupana Seed Extract (Guaraná), Phyllanthus Emblica Extract (Amla), Zizyphus Joazeiro Bark Extract (Juá), Chamomilla Recutita Flower Extract (Camomile), Aminomethyl Propanol, Disperse Violet 1, 4-Amino-3-Nitrophenol.

Third-party certifications are key indicators of a product's safety, ethics, and environmental impact. Click the icon to verify the certification.

Highlights aren't always verifiable, so you're trusting the brand when they say "lead free", etc. If the highlight icon is "clickable", it means we've verified the highlight.

User satisfaction is calculated using online reviews and a Bayesian average across all personal care and cosmetic products on Welpr.

Permanent Hair Dye - Tints of Nature

Permanent Hair Dye - Tints of Nature
Welpr Rating
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Welpr rating icon
4.7
/5
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Certifications

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<p>The B Corp certification indicates that a company meets high social and environmental standards. <a href="https://www.bcorporation.net/en-us/find-a-b-corp/company/herb-uk-ltd/" target="_blank">Source</a>.</p>
<p>The PETA certification identifies cosmetics, personal-care, and household products as cruelty-free ensuring no animal testing or animal-derived ingredients are used worldwide. <a href="https://crueltyfree.peta.org/company/tints-of-nature/" target="_blank">Source</a>.</p>

Highlights

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<p>The Vegan label indicates that a brand says their product does not contain animal-derived ingredients, but without certifications such as Certified Vegan, it cannot be verified.</p>

User Satisfaction

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We only include products on Welpr that are the best of the best. An EXCELLENT user satisfaction score indicates the product is in the top third of the best products.
Est. Price
$19.99

Product Details

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  • Provides maximum color performance and up to 100% grey coverage with long-lasting, intense and even results.
  • Formulated with over 75% certified organic and 95% naturally derived ingredients to nourish and protect hair.
  • Free from ammonia, parabens, resorcinol, and propylene glycol, ensuring a gentle impact on hair health.
  • Vegan-friendly and cruelty-free, promoting ethical beauty standards.
  • Available in a wide variety of shades including black, brown, red, and blonde.
  • Home hair colors are intermixable, allowing for the creation of bespoke shades.
  • Incorporates a patented formula that keeps PPD levels low to enhance hair’s natural health.
  • Manufacturing processes adhere to EU standards with a focus on ozone-friendly methods and greener initiatives.

Pros & Cons

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Pros Mentioned

  • Gentle
  • Easy
  • Healthy

Cons Mentioned

  • Pricey

Ingredients

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Ingredients can vary by product variation and may change at any time by the manufacturer. For the most complete and up-to-date list of ingredients, refer to the product packaging.


To analyze individual ingredients, use INCIDecoder.


Ingredients: PEG-2 Soyamine, Aqua, *Aloe Barbadensis Leaf Extract, **PEG-4 Rapeseedamide, Alcohol Denat, **Propanediol, Oleic Acid, Ethanolamine, †Parfum, **Hydrolyzed Wheat Protein, P-Phenylenediamine, 4-Chlororesorcinol, Sodium Sulfite, Sodium Hydrosulfite, Ascorbic Acid, Tetrasodium Gluamate Diacetate, PEG-7 Glyceryl Cocoate, *Symphytum Officinale (Comfrey) Leaf Extract, *Citrus Aurantium Dulcis (Orange) Peel Extract, *Citrus Grandis (Grapefruit) Fruit Extract, 2-Amino-4-Hydroxyethylaminoanisole Sulfate, N-Phenyl-P-Phenylenediamine Sulfate, M-Aminophenol, 4-Amino-2-Hydroxytoluene, TocopherolClarify Shampoo: Aqua, *Aloe Barbadensis Leaf Extract, Sodium C14-16 Olefin Sulfonate, **Cocamidopropyl Betaine, Sodium Cocoamphoacetate, Disodium Cocoamphodiacetate, PEG - 120 Methyl Glucose Dioleate, **Glyceryl Laurate, Sodium Sulfite, Phenoxyethanol, PEG-7 Glyceryl Cocoate, Urea, †Parfum, Tetrasodium Glutamate Diacetate, Ethylhexylglycerin, Citric Acid, *Citrus Grandis (Grapefruit) Fruit ExtractColour Fix: Aqua, *Anthemis Nobilis (Chamomile) Flower Extract, Hydrogen Peroxide, Phenoxyethanol, Benzyl Alcohol, Potassium Sorbate, Tocopherol, Etidronic Acid, Polyquaternium-10

Third-party certifications are key indicators of a product's safety, ethics, and environmental impact. Click the icon to verify the certification.

Highlights aren't always verifiable, so you're trusting the brand when they say "lead free", etc. If the highlight icon is "clickable", it means we've verified the highlight.

User satisfaction is calculated using online reviews and a Bayesian average across all personal care and cosmetic products on Welpr.

Root Retouch Creme - Naturtint

Root Retouch Creme - Naturtint
Welpr Rating
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Welpr rating icon
4.7
/5
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Highlights

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<p>The Cruelty-Free label indicates that a product says their product is free from animal testing, but without certifications such as PETAs Beauty Without Bunnies or Leaping Bunny, it cannot be verified.</p>
<p>The Vegan label indicates that a brand says their product does not contain animal-derived ingredients, but without certifications such as Certified Vegan, it cannot be verified.</p>

User Satisfaction

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We only include products on Welpr that are the best of the best. An EXCELLENT user satisfaction score indicates the product is in the top third of the best products.
Est. Price
$9.99

Product Details

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  • Suitable for root application on hair similar to Naturtint Permanent Hair Color 1N, 2N, and 2NB.
  • PPD free permanent hair color formula with up to 100% gray coverage in under 20 minutes.
  • Allows for easy blending of roots between coloring sessions and conceals grays without coloring entire hair.
  • Formulated with high-quality ingredients including no artificial fragrance, no ammonia, and no parabens.
  • Each kit comes complete with coloring essentials, including a mixing bowl and precision brush.
  • Features a line of permanent hair colors and root retouch products, recognized by the Bio-Preferred Program for using natural substitutes over petroleum-derived components.
  • Includes a color-safe and pH-balanced Color Care Collection with ingredients like shea butter, baobab, and sunflower seed extracts for maintaining long-lasting vibrant color.
  • Offers a Deep Conditioning Hair Food Masks infused with unique, nourishing ingredients to restore vitality and manageability to dry, damaged hair.
  • Provides Shampoo & Conditioner Bars as an eco-friendly alternative to traditional products, formulated with cocoa butter and meadowfoam seed oil and saving at least three plastic bottles per bar.
  • All products in the lineup are vegan, cruelty-free, paraben-free, ammonia-free, gluten-free, and artificial fragrance-free.

Pros & Cons

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Pros Mentioned

  • Natural
  • Gentle
  • Effective

Cons Mentioned

  • Brassy

Ingredients

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Ingredients can vary by product variation and may change at any time by the manufacturer. For the most complete and up-to-date list of ingredients, refer to the product packaging.


To analyze individual ingredients, use INCIDecoder.


Ingredients: Colorant: Water (Aqua), Cetearyl Alcohol, Glycerin, Ethanolamine, Toluene-2,5-Diamine Sulfate, Oleth-20, Oleth-5 Phosphate, Myristyl Alcohol, Crambe (Crambe Abyssinica) Seed Oil, Meadowfoam (Limnanthes Alba) Seed Oil, Behentrimonium Methosulfate, Dioleyl Phosphate, Quaternium-80, Propylene Glycol, 4-Chlororesorcinol, Argan (Argania Spinosa) Kernel Oil, Cocamidopropyl Betaine, Ceteareth-80, Myristyl Glucoside, Glycol Distearate, Glyceryl Stearate, Laureth-4, Tetrasodium Glutamate Diacetate, Sodium Erythorbate, Sodium Metabisulfite, Sodium Chloride, Sodium Benzoate, N,N-Bis (2-Hydroxyethyl)-p-Phenylenediamine Sulfate, 2-Amino-4-Hydroxyethylaminoanisole Sulfate, p-Aminophenol, m-Aminophenol, Phenyl Methyl Pyrazolone, 2-Methylresorcinol.Color Developer: Water (Aqua), Hydrogen Peroxide, Cetyl Alcohol, Cetearyl Alcohol, Laureth-3, Ceteareth-20, Oxyquinoline Sulfate, Phosphoric Acid.Protective Conditioner: Water (Aqua), Cetearyl Alcohol, Glycerin, Lemon (Citrus Limon) Fruit Water, Behentrimonium Methosulfate, Moringa (Moringa Pterygosperma) Seed Extract, Sunflower (Helianthus Annuus) Seed Extract, Linseed (Linum Usitatissimum) Seed Extract, Ceteareth-20, Cetyl Alcohol, Glyceryl Stearate, Ceteth-20, Steareth-20, Fragrance (Parfum), Sodium Benzoate, Potassium Sorbate, Disodium Phosphate, Limonene, Citric Acid.

Third-party certifications are key indicators of a product's safety, ethics, and environmental impact. Click the icon to verify the certification.

Highlights aren't always verifiable, so you're trusting the brand when they say "lead free", etc. If the highlight icon is "clickable", it means we've verified the highlight.

User satisfaction is calculated using online reviews and a Bayesian average across all personal care and cosmetic products on Welpr.

Semi-Permanent Hair Color Dye - Arctic Fox

Semi-Permanent Hair Color Dye - Arctic Fox
Welpr Rating
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Welpr rating icon
4.7
/5
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on Amazon
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Highlights

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<p>The Cruelty-Free label indicates that a product says their product is free from animal testing, but without certifications such as PETAs Beauty Without Bunnies or Leaping Bunny, it cannot be verified.</p>
<p>The Vegan label indicates that a brand says their product does not contain animal-derived ingredients, but without certifications such as Certified Vegan, it cannot be verified.</p>

User Satisfaction

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We only include products on Welpr that are the best of the best. An EXCELLENT user satisfaction score indicates the product is in the top third of the best products.
Est. Price
$13.99

Product Details

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  • Made with vegan ingredients and no animal by-products.
  • Free from harmful chemicals, peroxide, ammonia, ethyl alcohol, and PPD.
  • Conditions and restores vibrancy to hair with each use.
  • Formulated for minimal impact on hair health.
  • Produces a high-impact orange hue on blonde hair or a richer cayenne shade on darker hair.
  • Long lasting color that smears less and has a sweet scent.
  • Product is proudly made in the USA.

Pros & Cons

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Pros Mentioned

  • Vibrant
  • Easy
  • Long-lasting

Cons Mentioned

  • Transfers

Ingredients

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Ingredients can vary by product variation and may change at any time by the manufacturer. For the most complete and up-to-date list of ingredients, refer to the product packaging.


To analyze individual ingredients, use INCIDecoder.


Ingredients: Aqua, Cetyl Alcohol, Glycerine, Glycerol Stearate, PEG-100 Stearate, Propylene Glycol, Stearalkonium Chloride, Guar Hydroxypropyltrimonium Chloride, Quaternium-52, Cetearyl Alcohol, Ceteareth-20, Hydrolyzed Soy Protein, Fragrance, Citric Acid, Tetrasodium EDTA, Methylchloroisothiazolinone, MethylisothiazolinoneMay Contain: Basic Blue 3, Basic Blue 7, Basic Orange 1, Basic Orange 31, Basic Red 22, Basic Red 51, Basic Yellow 29, Basic Yellow 87, Basic Violet 2, Basic Violet 13, Ext. Violet 2

Third-party certifications are key indicators of a product's safety, ethics, and environmental impact. Click the icon to verify the certification.

Highlights aren't always verifiable, so you're trusting the brand when they say "lead free", etc. If the highlight icon is "clickable", it means we've verified the highlight.

User satisfaction is calculated using online reviews and a Bayesian average across all personal care and cosmetic products on Welpr.

Visibly Deeper Color Deepening Treatment - John Frieda

Visibly Deeper Color Deepening Treatment - John Frieda
Welpr Rating
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4.65
/5
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User Satisfaction

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We only include products on Welpr that are the best of the best. An EXCELLENT user satisfaction score indicates the product is in the top third of the best products.
Est. Price
$15.00

Product Details

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  • Deepens color after one use, designed for all shades of brunette hair
  • Rich and nourishing formula specifically for brunette hair
  • Color deepening treatment suitable for natural or color treated hair
  • Increases depth to darker shades after just one use
  • Contains cocoa and evening primrose oil
  • Free from ammonia and peroxide
  • Intensifies natural or color-treated brunette hair up to one shade darker in five minutes
  • Color safe, weekly in-shower treatment that replaces conditioner to hydrate and boost shine
  • Enhances brunette hair with rich, chocolate tones
  • Use in combination with John Frieda Brilliant Brunette Visibly Deeper Colour Deepening Shampoo for optimal results
  • Satisfaction guarantee with limitations applying

Pros & Cons

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Pros Mentioned

  • Softening
  • Restorative
  • Effective

Cons Mentioned

  • Inconsistent

Ingredients

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Ingredients can vary by product variation and may change at any time by the manufacturer. For the most complete and up-to-date list of ingredients, refer to the product packaging.


To analyze individual ingredients, use INCIDecoder.


Ingredients: Water, Cetearyl Alcohol, Dimethicone, Behenamidopropyl Dimethylamine, Cetyl Esters, Erythritol, Fragrance, Benzoic Acid, Benzyl Alcohol, Lactic Acid, Disodium EDTA, Basic Yellow 57, Basic Red 76, Glycine, Behentrimonium Chloride, Malic Acid, Oenothera Biennis (Evening Primrose) Flower Extract, Basic Blue 124, Propylene Glycol, Dipropylene Glycol, Theobroma Cacao (Cocoa) Extract

Third-party certifications are key indicators of a product's safety, ethics, and environmental impact. Click the icon to verify the certification.

Highlights aren't always verifiable, so you're trusting the brand when they say "lead free", etc. If the highlight icon is "clickable", it means we've verified the highlight.

User satisfaction is calculated using online reviews and a Bayesian average across all personal care and cosmetic products on Welpr.

Hair Color - Manic Panic

Hair Color - Manic Panic
Welpr Rating
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Welpr rating icon
4.6
/5
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Certifications

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<p>Products rated EWG-6 feature a moderate potential hazard rating and fair ingredient transparency. <a href="https://www.ewg.org/skindeep/search/?search=Manic+Panic+Semi+Permanent+Cream+Hair+Color" target="_blank">Source</a>.</p>
<p>The PETA certification identifies cosmetics, personal-care, and household products as cruelty-free ensuring no animal testing or animal-derived ingredients are used worldwide. <a href="https://crueltyfree.peta.org/company/manic-panic/" target="_blank">Source</a>.</p>

Highlights

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<p>The Vegan label indicates that a brand says their product does not contain animal-derived ingredients, but without certifications such as Certified Vegan, it cannot be verified.</p>
<p>The Made in USA label indicates that a product has substantial U.S. content and manufacturing.</p>

User Satisfaction

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We only include products on Welpr that are the best of the best. An EXCELLENT user satisfaction score indicates the product is in the top third of the best products.
Est. Price
$38.98

Product Details

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  • Bright cool-toned pink hair dye that glows under blacklight.
  • Recommended to lighten hair to a very light level nine blonde and tone to remove yellow before use.
  • Lasts six to eight weeks per application.
  • Contains three times the pigment and lasts 30% longer than the classic high voltage line.
  • Ready-to-use formula, no developer required.
  • Safe to mix colors for custom shades; can be combined with Manic Mixer/Pastel-izer for pastel hues.
  • Cruelty-free and vegan; tested on celebrities, not animals.
  • Free from PPD, ammonia, parabens, gluten, resorcinol, and phthalates.
  • Manufactured in the USA and PETA accredited.
  • Intended for best results on hair pre-lightened to a pale blonde.
  • Semi-permanent hair dye with conditioning effects, keeping hair moisturized and voluminous.

Pros & Cons

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Pros Mentioned

  • Vibrant
  • Lasting
  • Easy

Cons Mentioned

  • Stains

Ingredients

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Ingredients can vary by product variation and may change at any time by the manufacturer. For the most complete and up-to-date list of ingredients, refer to the product packaging.


To analyze individual ingredients, use INCIDecoder.


Ingredients: Water/Eau/Aqua, Propylene Glycol, Cetearyl Alcohol, Cetyl Alcohol, Ceteareth-20, Hydrogenated Castor Oil, Oleyl Alcohol, Stearalkonium Chloride, Guar Hydroxypropyltrimonium Chloride, Acetic Acid, Methylchloroisothiazolinone, Methylisothiazolinone, Aloe (Barbadensis) Leaf Juice, Basic Violet 16

Third-party certifications are key indicators of a product's safety, ethics, and environmental impact. Click the icon to verify the certification.

Highlights aren't always verifiable, so you're trusting the brand when they say "lead free", etc. If the highlight icon is "clickable", it means we've verified the highlight.

User satisfaction is calculated using online reviews and a Bayesian average across all personal care and cosmetic products on Welpr.

Permanent Hair Color 5G - Naturtint

Permanent Hair Color 5G - Naturtint
Welpr Rating
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Welpr rating icon
4.55
/5
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Certifications

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<p>Products rated EWG-9 feature a high potential hazard rating and the lowest transparency of ingredient data. <a href="https://www.ewg.org/skindeep/search/?search=Naturtint+Permanent+Hair+Color" target="_blank">Source</a>.</p>
<p>The USDA Certified Biobased Product Label certifies that a product is made primarily from renewable biological resources, verified through third-party testing and ongoing USDA monitoring.</p>

Highlights

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<p>The Cruelty-Free label indicates that a product says their product is free from animal testing, but without certifications such as PETAs Beauty Without Bunnies or Leaping Bunny, it cannot be verified.</p>
<p>The Vegan label indicates that a brand says their product does not contain animal-derived ingredients, but without certifications such as Certified Vegan, it cannot be verified.</p>

User Satisfaction

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We only include products on Welpr that are the best of the best. An EXCELLENT user satisfaction score indicates the product is in the top third of the best products.
Est. Price
$14.99

Product Details

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  • Ammonia-free formulation.
  • Free from parabens, artificial fragrances, resorcinol, heavy metals, sodium lauryl sulfate, and sodium laureth sulfate.
  • Enriched with plant ingredients like Oleic Acid from olives and Meadowfoam Seed Oil for added softness and shine.
  • Provides up to 100% gray coverage.
  • Available in 32 mixable shades.
  • Vegan and cruelty-free product.
  • Part of the Bio-Preferred Program, aims for a reduction in the use of petroleum-derived substances.

Pros & Cons

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Pros Mentioned

  • Gentle
  • Soft
  • Natural

Cons Mentioned

  • Brassy

Ingredients

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Ingredients can vary by product variation and may change at any time by the manufacturer. For the most complete and up-to-date list of ingredients, refer to the product packaging.


To analyze individual ingredients, use INCIDecoder.


Ingredients: Hair Colorant - Ingredients: Peg-2 Oleamine, Water (Aqua), Peg-4 Rapeseedamide, Alcohol Denat (Alcohol), Propylene Glycol, Ethanolamine, Oleic Acid Hydrolyzed Vegetable Protein, Limnanthes Alba (Meadowfoam) Seed Oil, Tetrasodium Glutamate Diacetate, Sodium Metabisulfite, Sodium Erythorbate, P-Phenylenediamine And +/-: 4-Amino-2-Hydroxytoluene, P-Aminophenol, 2-Methylresorcinol, M-Aminophenol, N, N-Bis (2-Hydroxyethyl)-P-Phenylenediamine Sulfate, 2-Amino-4-Hydroxyethylaminoanisole Sulfate, 4-Chlororesorcinol, 2,4-Diaminophenoxyethanol Hcl, 1-Hydroxyethyl 4,5-Diamino Pyrazole Sulfate Color Developer – Ingredients: Water (Aqua), Hydrogen Peroxide, Cetyl Alcohol, Cetearyl Alcohol, Laureth-3, Ceteareth-20, Oxyquinoline Sulfate, Phosphoric Acid

Third-party certifications are key indicators of a product's safety, ethics, and environmental impact. Click the icon to verify the certification.

Highlights aren't always verifiable, so you're trusting the brand when they say "lead free", etc. If the highlight icon is "clickable", it means we've verified the highlight.

User satisfaction is calculated using online reviews and a Bayesian average across all personal care and cosmetic products on Welpr.

Henna Hair Color & Conditioner - Rainbow Research

Henna Hair Color & Conditioner - Rainbow Research
Welpr Rating
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4.5
/5
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Highlights

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<p>The Cruelty-Free label indicates that a product says their product is free from animal testing, but without certifications such as PETAs Beauty Without Bunnies or Leaping Bunny, it cannot be verified.</p>
<p>The Vegan label indicates that a brand says their product does not contain animal-derived ingredients, but without certifications such as Certified Vegan, it cannot be verified.</p>

User Satisfaction

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We only include products on Welpr that are the best of the best. A GOOD user satisfaction score indicates the product is in the bottom third of the best products.
Est. Price
$15.89

Product Details

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  • 100% botanical hair color and conditioner.
  • No additives, chemicals, or pesticides.
  • Coats each hair shaft with color.
  • Fades gradually over 4-6 weeks.
  • Smooths and seals the hair's cuticle for greater shine and body.

Pros & Cons

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Pros Mentioned

  • Natural
  • Effective
  • Conditioning

Cons Mentioned

  • Messy

Ingredients

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Ingredients can vary by product variation and may change at any time by the manufacturer. For the most complete and up-to-date list of ingredients, refer to the product packaging.


To analyze individual ingredients, use INCIDecoder.


Ingredients: Lawsonia Inermis (Red Henna), Indigofera (Black Henna), Cassia Obovata (Neutral Henna)

Third-party certifications are key indicators of a product's safety, ethics, and environmental impact. Click the icon to verify the certification.

Highlights aren't always verifiable, so you're trusting the brand when they say "lead free", etc. If the highlight icon is "clickable", it means we've verified the highlight.

User satisfaction is calculated using online reviews and a Bayesian average across all personal care and cosmetic products on Welpr.

Foaming Semi-Permanent Hair Dye Kit - Hally

Foaming Semi-Permanent Hair Dye Kit - Hally
Welpr Rating
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Welpr rating icon
4.5
/5
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on Amazon
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Highlights

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<p>The Cruelty-Free label indicates that a product says their product is free from animal testing, but without certifications such as PETAs Beauty Without Bunnies or Leaping Bunny, it cannot be verified.</p>
<p>The Vegan label indicates that a brand says their product does not contain animal-derived ingredients, but without certifications such as Certified Vegan, it cannot be verified.</p>

User Satisfaction

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We only include products on Welpr that are the best of the best. A GOOD user satisfaction score indicates the product is in the bottom third of the best products.
Est. Price
$12.99

Product Details

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  • Features foaming semi-permanent hair dye technology for a mess-free coloring experience.
  • Easy application process: pump lather, apply to dry hair, wait 30 minutes, and rinse.
  • Safe for use by all ages, including children and pregnant women.
  • Formulated without harsh additives, enriched with natural extracts such as chamomile, lavender, aloe vera, and ginseng root.
  • Cruelty-free and vegan, promoting responsible beauty practices.
  • Designed to provide vibrant, long-lasting color for up to 4-6 weeks or 25 washes.

Pros & Cons

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Pros Mentioned

  • Effective
  • Easy
  • Non-damaging

Cons Mentioned

  • Allergic

Ingredients

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Ingredients can vary by product variation and may change at any time by the manufacturer. For the most complete and up-to-date list of ingredients, refer to the product packaging.


To analyze individual ingredients, use INCIDecoder.


Ingredients: Water, Hydrogen Peroxide, Ceteareth-7, Laureth-12, Laureth-23, Tetrasodium EDTA, Sodium Stannate Trihydrate, Chamomile Extract, Aloe Vera Extract, Lavender Extract, Ginseng Root Extract

Third-party certifications are key indicators of a product's safety, ethics, and environmental impact. Click the icon to verify the certification.

Highlights aren't always verifiable, so you're trusting the brand when they say "lead free", etc. If the highlight icon is "clickable", it means we've verified the highlight.

User satisfaction is calculated using online reviews and a Bayesian average across all personal care and cosmetic products on Welpr.

Heat Activated Healthier Permanent Hair Dye with Certified Organic Ingredients - ONC Naturalcolors

Heat Activated Healthier Permanent Hair Dye with Certified Organic Ingredients - ONC Naturalcolors
Welpr Rating
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Welpr rating icon
4.5
/5
Buy Now
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on Amazon
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Highlights

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<p>The Cruelty-Free label indicates that a product says their product is free from animal testing, but without certifications such as PETAs Beauty Without Bunnies or Leaping Bunny, it cannot be verified.</p>
<p>The Vegan label indicates that a brand says their product does not contain animal-derived ingredients, but without certifications such as Certified Vegan, it cannot be verified.</p>

User Satisfaction

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We only include products on Welpr that are the best of the best. A GOOD user satisfaction score indicates the product is in the bottom third of the best products.
Est. Price
$29.50

Product Details

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  • 2:1 Color & Hair Care: Combines natural-looking color with nourishment using vitamins, herbal extracts, and essential oils to protect hair and scalp.
  • Heat-Activated: Utilizes body heat to open hair cuticles naturally, avoiding harsh chemicals and retaining the hair's health.
  • Lifts Two Shades: Designed to elevate hair color by 1-2 shades; not suitable for turning black hair blonde.
  • Organic Ingredients: Contains certified organic ingredients like argan oil, aloe vera, and chamomile, ensuring cruelty-free and vegan-friendly properties.
  • No Harsh Chemicals: Free from ammonia, parabens, resorcinol, sulfate, gluten, silicone, and other harsh chemicals, featuring a low pH formula for gentle processing.
  • Complete Kit Included: Comes with color gel, developer, gloves, cap, mixing bowl, brush, shampoo, and conditioner, along with simple instructions for home use.
  • Maintains Healthy Hair: Promotes long-lasting color with full coverage while ensuring the hair remains soft and smooth under various conditions.
  • Revolutionary Heat Application: Lowers the risk of damage by using heat to activate the dye, instead of common chemical methods.
  • Eco-Friendly and Health-Conscious: Uses sustainable practices, low pH levels, and natural ingredients to minimize health risks and environmental impact.
  • Recommended by Users: Praises for effective grey coverage and maintaining natural hair texture without harsh smells or ingredients.

Pros & Cons

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Pros Mentioned

  • Glossy
  • Lasting
  • Easy

Cons Mentioned

  • Complicated

Ingredients

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Ingredients can vary by product variation and may change at any time by the manufacturer. For the most complete and up-to-date list of ingredients, refer to the product packaging.


To analyze individual ingredients, use INCIDecoder.


Ingredients: Hydrolyzed Organic Wheat Protein (Gluten-Free), Organic Aloe Vera, Organic Comfrey Leaf, Organic Orange Peel, Organic Grapefruit, Coconut Oil, Organic Sunflower Seed Oil, Silver Birch, Millet, Field Horsetail, Sage, Nettle, Green Tea, Greater Burdock, Hops, Organic Sweet Almond Oil, Candelilla, Banana

Third-party certifications are key indicators of a product's safety, ethics, and environmental impact. Click the icon to verify the certification.

Highlights aren't always verifiable, so you're trusting the brand when they say "lead free", etc. If the highlight icon is "clickable", it means we've verified the highlight.

User satisfaction is calculated using online reviews and a Bayesian average across all personal care and cosmetic products on Welpr.

Radiant Hair Color Kit - Madison Reed

Radiant Hair Color Kit - Madison Reed
Welpr Rating
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Welpr rating icon
4.5
/5
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on Amazon

Certifications

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<p>The Leaping Bunny certification assures that products are genuinely cruelty-free, verified through rigorous audits and a comprehensive Supplier Monitoring System. <a href="https://www.leapingbunny.org/brand/madison-reed" target="_blank">Source</a>.</p>
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User Satisfaction

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We only include products on Welpr that are the best of the best. A GOOD user satisfaction score indicates the product is in the bottom third of the best products.
Est. Price
$30.00

Product Details

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  • Provides high-quality, permanent hair color for multi-tonal and natural-looking results.
  • Suitable for different hair types and textures.
  • Cream-based color is easy to apply, especially to roots for precise coverage.
  • Dermatologist tested and designed to improve hair condition according to an independent clinical study.
  • Formulated without ammonia, PPD, resorcinol, paraben, phthalates, SLS, gluten, titanium dioxide; cruelty-free.
  • Infused with keratin, argan oil, and ginseng root extract to enhance hair health, condition, and shine.
  • Ensures long-lasting 100% gray coverage with dimensional, multi-tonal results.
  • Available in 25 shades.
  • Kit includes all necessary components: Radiant Cream Color, Conditioning Color Activator, gloves, cap, barrier cream, cleansing wipe, Color Protecting Shampoo & Conditioner, and instruction booklet.

Pros & Cons

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Pros Mentioned

  • Even
  • Long-lasting
  • Natural

Cons Mentioned

  • Costly

Ingredients

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Ingredients can vary by product variation and may change at any time by the manufacturer. For the most complete and up-to-date list of ingredients, refer to the product packaging.


To analyze individual ingredients, use INCIDecoder.


Ingredients: Radiant Cream Color: Water, Stearyl Alcohol, Propylene Glycol, Ethanolamine, Cetyl Alcohol, Ceteareth-25, Cocamide MEA, Toluene-2,5-Diamine Sulfate, Polyquaceteth-2, Ternium-6, Argania Spinosa Kernel Oil, Hydrolyzed Keratin, Panax Ginseng Root Extract, Dimethicone, Palmitic Acid, Sodium Hydrosulfite, Sodium Sulfite, Butylene Glycol, 2-Methylresorcinol, P-Aminophenol, M-Aminophenol, 2,4 Diaminophenoxyethanol HCL, 4-Chlororesorcinol, 2-Amino-3-HydroxypyridineConditioning Color Activator: Water, Hydrogen Peroxide, Cetearyl Alcohol, Sodium Laureth Sulfate, Propylene Glycol, Dimethicone, Oxyquinoline Sulfate, Pentasodium Pentate, Phosphoric Acid, Tetrasodium EDTA, Etidronic AcidCleansing Wipe: Water, Isopropyl Alcohol, Glycerin, Polysorbate 20, Sodium Cocyl Glutamate, Sodium Lauryl Glutamate, Disodium Cocyl Glutamate, Tetrasodium Glutamate Diacetate, Ethylxexylglycerin, Phenoxyethanol, FragranceBarrier Cream: Water, Mineral Oil, Glycerin, PVP, PEG-40 Hydrogenated Castor Oil Stearic Acid, Argania Spinosa (Argan) Kernel Oil, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Glyceryl Stearate, PEG-100 Stearate, Disodium EDTA, Ethylhexylglycerin, Sodium Hydroxide, Phenoxythanol, FragranceColor Protecting Shampoo: Water, Sodium Lauroyl Methyl Isethionate, Cocamidopropyl Betaine, Sodium Cocoyl Isethionate, Disodium Cocoamphodiacetate, Aloe Barbadensis Leaf Juice, Glycol Distearate, PEG-120 Methyl Glucose Dioleate, Keratin, Hydrolyzed Keratin, Panax Ginseng Root Extract, Argania Spinosa (Argan) Kernel Oil, Hydrolyzed Lupine Seed Extract, Hydrolyzed Rice Protein, Hydrolyzed Quinoa, Glycerin, Panthenol, Cocamidopropyl Hydroxysultaine, Guar Hydroxypropyltrimonium Chloride, Trideceth-12, Polyquaternium-10, Sodium Cocoyl Glutamate, Phenoxyethanol, Ethylhexylglycerin, Trimethylsiloxyamodimethicone, C11-15 Pareth-7, Cocamidopropyl Dimethylamine, Butylene Glycol, Benzyl Alcohol, Caprylhydroxamic Acid, Sodium Chloride, FragranceColor Protecting Conditioner: Water, Aloe Barbadensis Leaf Juice, Cetearyl Alcohol, Stearyl Alcohol, Polyquaternium-7, Behentrimonium Chloride, Stearalkonium Chloride, Hydrolyzed Lupine Seed Extract, Hydrolyzed Rice Protein, Keratin, Hydrolyzed Keratin, Panax Ginseng Root Extract, Argania Spinosa (Argan) Kernel Oil, Jojoba Esters, Panthenol, Beta-Glucan, Glycolic Acid, Hydrolyzed Vegetable Protein PG-Propyl Silanetriol, Amodimethicone, Trideceth-12, Cetrimonium Chloride, Hydroxyethylcellulose, Guar Hydroxypropyltrimonium Chloride, Centrimonium Bromide, Phenoxyethanol, Ethlyhexylglycerin, Isopropyl Alcohol, Butylene Glycol, FragranceReplacement Ingredients In Madison Radiant Cream Color To Replace PPD, One Key Ingredient Used Is A Para Toluene Diamine (PTD) Ingredient Called Toluene 2,5-Diamine Sulfate (TDS). To Replace Resorcinol, 2-Methylresorcinol Is Used. To Replace Ammonia, Ethanolamine Is Used.

Our Product Rating System

Our Product Rating System

First, Camille (co-creator of Welpr) hand picks cleaner product options from a variety of sources.

Next, we collect information about each product's safety, consumer satisfaction, and eco-ethical standing.

Finally, we run all this information through an algorithm that calculates the Welpr Rating.

Welpr Rating:

5.0/5

The Welpr Rating takes into account 3 things:

  1. Product Safety
  2. Consumer Satisfaction
  3. Ethics & Environment
Product safety

Part 1: Product safety

We evaluate safety information from 3rd party organizations (e.g. EWG, Made Safe, etc.). Instead of relying solely on any one of these companies for safety information, we assess all of them.

Consumer satisfaction

Part 2: Consumer satisfaction

We scour the web for consumer ratings and reviews to verify products are not only cleaner options, but also effective. Products can either be Above Average, Average, or Below average for their respective category (e.g. cleaning products).

Ethics & Environment

Part 3: Ethics & Environment

When you buy a product, you’re supporting that company with your dollars. We believe it’s important to support ethical companies, so we pool together certifications that verify a company's ethics and environmental impact.

Common Harmful Chemicals in Hair Dye

Chemical Name

Why it’s harmful

Anthracene

Anthracene (ANT) is prominently used in various sectors including dyeing, organic semiconductor research, and the creation of smoke screens. ANT ingestion is linked to melanosis coli, a condition potentially tied to colorectal tumors, and increased apoptosis in epithelial cells. In workplace exposure studies (1946-2002), workers exposed to ANT and similar substances developed different skin cancers, however, no carcinogenicity was found in animal skin tests. Genotoxicity tests on bacteria presented negative results for most cases while ecotoxicity studies showed that ANT exposure caused oxidative stress in organisms and proved fatal for bluegill sunfish under sunlight.

Benzo[a]pyrene

Benzo[a]pyrene (BaP) is a polycyclic aromatic hydrocarbon released into the atmosphere through various processes, including industrial activities, forest fires, and burning of fuel. Human exposure to BaP is associated with adverse birth outcomes, diminished fertility, neurobehavioral effects, and strong evidence of carcinogenicity in certain occupations. Accumulation of BaP in human blood plasma contributes to chromosomal aberrations. Animal studies demonstrate BaP's association with developmental, reproductive, and immunological effects, indicating its carcinogenic nature. Ecotoxicity studies on various species like ducks and rainbow trout indicate poor survival rates and developmental abnormalities, evidencing BaP's broad capacity for environmental harm.

DEA Oleth-3 Phosphate

DEA Oleth-3 phosphate is employed in skincare as an emulsifying, cleansing, and dispersing agent that facilitates the cohesive mixing of oil and water ingredients in cosmetic products. It is a combination of ethoxylated fatty acid oleic acid and liquid phosphoric acid. However, ethanolamines like diethanolamine (DEA), found in various consumer products including cosmetics and cleaning products, have been associated with liver tumors. To reduce contamination from carcinogenic nitrosamines, the European Commission prohibits the use of DEA in cosmetics.

DEA-Cetyl Phosphate

DEA-Cetyl Phosphate serves as an emulsifier and surfactant in cosmetics and personal care products. However, it can accumulate in the liver and kidneys, leading to organ toxicity and potential neurotoxic effects like tremors. Maternal exposure to DEA may also have lasting impacts on memory function and brain development in offspring. Furthermore, DEA has been linked to male reproductive health issues, causing abnormalities in sperm structure and function.

Lauramide DEA

Lauramide DEA is an ethanolamide mixture of lauric acid commonly used in soaps, cleansers, and shampoos. It is known to cause mild to moderate eye irritation and mild to severe skin irritation. While the Cosmetic Ingredient Review (CIR) Expert Panel has deemed it safe for use, caution is advised in cosmetics and personal care products that also contain nitrosating agents to prevent the formation of potentially carcinogenic nitrosamines.

Linoleamide MEA

Linoleamide MEA is utilized in cosmetics for functions such as foam boosting, antistatic properties, viscosity control, and hair conditioning. It is used in a wide range of consumer products, including cosmetics, personal care items, and household cleaning products. However, it has the potential to irritate the eyes and skin at higher concentrations and may cause short-term exposure-related effects on the central nervous system, nasal irritation, or pulmonary edema.

Myristamide DEA

Methylparaben is a non-volatile compound used as an antimicrobial preservative in various products, with contact exposure reported to cause dermatitis in some people. The mechanism of this sensitivity is not well understood, but it seems to intensify when applied to broken or damaged skin. Animal studies showed it to be generally non-toxic and non-carcinogenic, with no significant adverse effects noted at high exposure levels. There were contrasting findings on its effect in uterotrophic assays and its toxicity to sperm cells. In ecotoxicity studies, it affected the expression levels of genes in male Medaka fish at certain concentrations

Octinoxate

Octinoxate, commonly found in various cosmetic and personal care products such as hair color products, sunscreen, lipstick, and skin creams, is an endocrine disruptor that mimics estrogen and can affect thyroid function. It has been detected in human urine, blood, and breast milk, indicating systemic exposure. Octinoxate's potential health concerns include its impact on cell proliferation in response to estrogen exposure, disruptions in thyroid hormones, alterations in reproductive systems, and adverse effects on the development of male and female fetuses, as well as their offspring.

Oleamide DEA

Oleamide DEA is utilized in shampoos, hair dyes, bath products, and lotions for enhancing foaming capacity, stabilizing foam, and thickening the water-based components. However, there is a concern that in cosmetics, DEA can react with other ingredients to create a carcinogen called nitrosodiethanolamine (NDEA), which can be absorbed through the skin.

P-phenylenediamine

P-phenylenediamine (PPD) is commonly found in permanent hair dyes, primarily used for oxidative color fixation, with concentrations around 4 percent. It reacts with hydrogen peroxide to bind color to hair and is sometimes mixed with other chemicals. PPD belongs to aromatic amines, also present in other industries like plastics and photography. Concerns include skin sensitization, potential mutagenicity leading to DNA alterations, and carcinogenicity. PPD is associated with skin allergies and is considered a potential carcinogen, particularly linked to bladder cancers, although research results have been conflicting. Ingestion of PPD can be highly toxic, causing respiratory distress, renal failure, and even fatalities in severe cases.

Phenoxyethanol

2-Phenoxyethanol is a hazardous substance toxic by all routes of exposure, and is used widely in products like cosmetics, soaps, and inks, among others. The effects of exposure to this faintly aromatic, colorless, oily liquid can include eye irritation, headaches, tremors, and CNS depression. It's crucial to rinse exposed eyes with tepid water for at least 15 minutes and to wash exposed skin thoroughly with soap and water in case of contact. The substance requires preheating before ignition can occur, and if involved in a fire, gentle water spray can extinguish the fire by inducing frothing.

Polyquaternium

Polyquaternium, modified polymers through quaternization are known for skin toxicity and allergenicity. Prolonged exposure, especially for hairdressers and janitors, may pose risks. It's found in various products, including hair conditioners, creams, and household cleaning items. Concerns include skin irritation, formaldehyde release, and contact dermatitis. Regulations in the EU limit Quaternium-15 to 0.2% in cosmetics, while the US lacks specific regulations.

Resorcinol

Resorcinol is a white crystalline compound with various uses in areas like tanning, photography, resin manufacture, adhesives, and cosmetics. It can be used medically as an antifungal, antibacterial, and keratolytic agent, and in dermatology-related treatments, specifically for acne amongst others. Direct skin contact with the compound can cause redness, itching, dermatitis, and even corrosion of the affected area. Overexposure could lead to symptoms like irritation, dermatitis, dyspnea, drowsiness, hypothermia, and changes to spleen, kidney, and liver. Animal studies have shown that high oral doses can result in fatalities whereas smaller doses can cause changes to liver weights with no reported carcinogenic effect or mutations in Salmonella typhimurium strains.

Stearamide MEA

Stearamide Monoethanolamine (MEA) is an ingredient in cosmetics and personal care products like deodorants, shampoos, makeup, and bath items. Its role is to thicken the water-based part of these products and enhance their foaming properties and foam stability. MEA was found to be non-irritating to the skin at a 17% concentration, but it caused slight to moderate irritation to the eyes of rabbits.

Titanium Dioxide

The study on 1,576 U.S. workers exposed to TiO2 for over a year from 1956 to 1985 showed no increase in lung cancer or chronic respiratory disease, and no cases of pulmonary fibrosis. Cases of pulmonary fibrosis related to TiO2 exposure have been reported, possibly due to silica contamination. There are no listed effects for short-term or long-term exposure. Although NIOSH recognises ultrafine TiO2 as a potential occupational carcinogen, data is insufficient to classify fine TiO2 similarly. Epidemiological studies do not provide clear evidence of lung cancer risks from TiO2 dust exposure.

Triethanolamine Lauryl Sulfate

An eye irritant; May cause corneal damage on prolonged contact; [CAMEO] A skin and eye irritant, based on animal studies; [IUCLID] An irritant; May cause serious eye injury; [MSDSonline] See Triethanolamine.

Xylene

Xylene is a colorless, flammable liquid with a sweet odor that can be found in cosmetic products. Its functions include enhancing fragrance and perfuming the skin, as well as serving as a solvent to dissolve other substances in the formulation. However, it's important to note that exposure to xylene can lead to various health issues, including irritation of the eyes, nose, skin, and throat, along with symptoms like headaches, dizziness, confusion, and loss of muscle coordination.

Benzene

Benzene is a colorless, sweet-smelling, highly flammable liquid that evaporates quickly into the air and slightly dissolves in water. It's a byproduct of both natural processes and human activities, used extensively in the U.S production of other chemicals for plastics, resins, nylon, rubbers, lubricants, dyes, detergents, drugs, and pesticides. Present in crude oil, gasoline, and cigarette smoke, benzene is also released into the air from burning coal, oil, gasoline stations, and vehicle exhaust. Short-term exposure may cause drowsiness, dizziness, and irritation, while long-term exposure leads to blood disorders, reproductive effects, and even leukemia. Benzene has been classified by EPA as a known human carcinogen, and regulations apply to various industry sectors with potentially high exposure risks.

Sources: 
Diethanolamine

Diethanolamine is a chemical found in various consumer products like shampoos, cosmetics, and pharmaceuticals. Acute exposure in humans can result in irritation of the nose, throat, and skin. However, no detailed data is available on its chronic, reproductive, developmental or carcinogenic effects on humans. Studies on animals reveal that acute oral exposure can influence the liver, blood, kidney, and central nervous system, while dermal exposure has been connected with an increased incidence of liver and kidney tumors in mice. Production of first-degree burns, skin irritation, occupational asthma, kidney, and liver injury risk, and potential skin sensitization are some other adverse effects associated with diethanolamine.

Formaldehyde

Formaldehyde is a colorless, flammable gas with a pungent smell that's naturally produced in small quantities in human bodies and is also known as methanal amongst other names. It's used in the production of various items such as fertilizers, paper, plywood, and urea-formaldehyde resins as well as in some foods and household products like antiseptics, medicines, and cosmetics. Exposure to formaldehyde, which can occur through breathing contaminated indoor air, tobacco smoke, or ambient urban air can lead to respiratory symptoms, irritation of the eyes, nose and throat and has been linked to lung and nasopharyngeal cancer as well as leukemia. The EPA considers formaldehyde a probable human carcinogen (Group B1) and inhaling it can cause bronchospasm and pulmonary edema. Commercially, it's sold as formalin in solutions of 37%, 44%, or 50% and long-term exposure can cause first-degree burns, skin sensitization, squamous cell nasal cancer, and chronic pulmonary obstruction.

Methylchloroisothiazolinone

5-chloro-2-methyl-4-isothiazolin-3-one (CMI) is a compound frequently used as a preservative in cosmetics, hygiene products, and other industrial applications such as hydraulic fracturing fluids. It can also be deployed as a pesticide in the U.S, pending regulatory approval. CMI, which is often used in combination with 2-methyl-4-isothiazolin-3-one (MI), can cause contact dermatitis in humans. Various animal studies have shown that a high exposure to a CMIT/MIT mixture can cause alterations in rats' liver function. The production and use of CMI in a range of products mean it can be release into the environment, with some susceptibility to degradation through photolysis in sunlight. Its mobility in soil is high but volatilization from soil or water surfaces is not expected to be significant. Occupational and general exposure to CMI can occur especially through inhalation and dermal contact with CMI-containing products.

Sources: 
Methylisothiazolinone

Methylisothiazolinone can reportedly cause allergic contact dermatitis in workers who interact with products containing it. This substance is recognized as a contact allergen for consumers using cosmetics that include it. It can cause skin burns and sensitization, and inhaling it may lead to corrosive injuries in the upper respiratory tract and lungs. Ingesting this substance is harmful, and inhalation is toxic. This preservative is linked to the category of isothiazolinones.

Sources: 
Naphthalene

Naphthalene is a white solid, also known as white tar and tar camphor, found in substances like petroleum, coal, tobacco, and wood. It vaporizes easily and has a strong but not unpleasant odor. Major uses for naphthalene include the production of polyvinyl chloride (PVC) plastics, moth repellents, toilet deodorant blocks, and other chemicals such as dyes and resins. Acute exposure to naphthalene can trigger hemolytic anemia, liver damage, and neurological conditions, with chronic exposure potentially leading to cataracts and retina damage. The substance is considered a possible human carcinogen and high doses have lethal potential, particularly for individuals with specific health conditions.

Toluene

Toluene is a clear, colorless liquid that naturally occurs in crude oil and the tolu tree. It's prominent in the production of gasoline, coke from coal, and various consumer products like paints, adhesives, and nail polish. Toluene is even added to gasoline, used to create benzene, and acts as a solvent. However, exposure to toluene, especially from inhalation, can have serious health effects. It primarily targets the central nervous system, inducing symptoms like fatigue, nausea, headaches, and in chronic cases, can cause severe dysfunction. Exposure has also been linked to developmental effects in children, but there isn't enough evidence to conclude its carcinogenic potential. Abuse of toluene can cause permanent brain damage, liver injury, and even potential birth defects or increased risk of spontaneous abortions in pregnant women. Despite these risks, cognitive deficits from toluene exposure below a threshold limit value (TLV) of 50 ppm remain extremely low.

Triethanolamine

Triethanolamine appears to cause occupational asthma and allergic contact dermatitis in machinists and photographers, as well as liver and kidney damage in animals with high-dose feeding. It's noted to be an irritant to the skin, eyes, and respiratory tract, with potential to cause skin sensitization, though the rate of skin sensitization in humans is low. Triethanolamine has low acute toxicity, with median oral LD50 values of 4,190-11,260 mg/kg in rats and 5,300-8,000 mg/kg in guinea pigs, and a median dermal LD50 greater than 2,000 mg/kg in rabbits. Triethanolamine is not carcinogenic, developmental toxicant, or toxic to the reproductive system. However, chronic exposure may lead to liver and kidney damage.

Quaternium-15

Quaternium-15 is a preservative commonly used in cosmetics which is known to significantly contribute to allergic contact dermatitis in users. This condition has been reported in various professions, including hairdressers, machine maintenance engineers at a chicken processing plant, and photocopy workers. Notably, Quaternium-15, as a formaldehyde releaser, increases dermatitis risk. However, rinse-off products typically pose a lower risk of resulting in allergic contact dermatitis.

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About The Author

Camille May

Hey, I’m Camille, co-creator of Welpr and your clean living guide. After selling my last company in the health food space, I went non-toxic to heal an autoimmune condition. It did wonders for my health, but navigating which products to buy wasn’t easy. We created Welpr to make that journey feel a little bit easier. When I’m not working on Welpr, you can find me at the farmers market or unwinding in the sauna, always in bed at 9pm with a good book. I live in my hometown of Austin, TX with my pit bull, Romeo.