Hair Ingredient Encyclopedia

Decode every ingredient in your hair products. 500+ ingredients analyzed for safety, compatibility, and effectiveness.

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Browse A-Z

Chlorhexidine

6/10 Not CG Controversial
Preservative
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Methylisothiazolinone

2/10 Not CG Avoid
Preservative
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Dehydroacetic Acid

8/10 CG Approved Clean
Preservative
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Sorbic Acid

9/10 CG Approved Clean
Preservative
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Benzyl Alcohol

7/10 CG Approved Clean
Fragrance, Preservative, Solvent
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Steareth-21

7/10 Not CG Controversial
Emulsifier
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PEG-100 Stearate

7/10 Not CG Controversial
Emulsifier
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Glyceryl Stearate

9/10 CG Approved Clean
Emollient, Emulsifier
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Sorbitan Oleate

8/10 CG Approved Clean
Emulsifier
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Polysorbate 80

7/10 CG Approved Controversial
Emulsifier, Surfactant
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Ingredient Encyclopedia FAQ

How do I check if my hair product ingredients are safe?

Use our Label Analyzer tool. Simply copy the ingredient list from the back of your product bottle and paste it in. You'll get an instant report showing the safety rating, CG-method compatibility, and potential concerns for every ingredient.

What does CG-method approved mean?

The Curly Girl (CG) Method is a hair care approach that avoids sulfates, silicones, and other ingredients that can dry out or weigh down curly hair. CG-approved ingredients are safe to use if you follow this method.

What are the worst ingredients for hair?

The most commonly avoided hair product ingredients include harsh sulfates (SLS, SLES), drying alcohols, formaldehyde-releasing preservatives, and certain synthetic fragrances. However, what's "bad" depends on your hair type — browse our Avoid category for the full list.

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