Polyquaternium-10
POL-ee-KWAT-er-nee-um ten
What Is Polyquaternium-10?
Polyquaternium-10 is a positively charged (cationic) polymer derived from cellulose. It is one of the most widely used conditioning polymers in shampoos because it deposits onto negatively charged hair during rinsing, providing conditioning without weighing hair down. It is considered one of the safest and most effective rinse-off conditioning agents available.
Source: Cellulose (plant-derived), chemically modified
Origin: Semi-synthetic
Also known as: PQ-10, Quaternized Hydroxyethylcellulose
What Does Polyquaternium-10 Do to Your Hair?
Polyquaternium-10 carries a positive electrical charge that causes it to be attracted to and deposit onto the negatively charged surface of hair, especially damaged areas. This deposition forms a thin conditioning film that reduces static, improves wet combability, and adds softness. It is particularly effective in shampoo formulations where it conditions during the rinse step.
Best For
All hair types, color-treated hair, damaged hair, fine hair wanting lightweight conditioning
Not Recommended For
Not known to be problematic for any hair type
Concentration Matters
0.1-2%
Hair Type Compatibility
Method Compatibility
Safety & Regulation
Extremely safe. Non-irritating, non-sensitizing, and non-toxic. CIR panel reviewed and considers safe in cosmetic formulations. No environmental concerns at typical use levels.
FDA Status: Generally Recognized As Safe
FDA permits use in cosmetics without restrictions. CIR panel considers safe as used in cosmetic formulations.
EWG Score: 1/10
HairAide Verdict
Polyquaternium-10 is an unsung hero of hair care that works silently in the background of your shampoo to keep hair soft and manageable. It is one of the safest conditioning polymers available and provides noticeable improvements in combability. HairAide considers it a mark of a well-formulated shampoo.
Products That Contain Polyquaternium-10
Shampoos, conditioners, leave-in treatments, styling products
Alternatives to Polyquaternium-10
If you want to avoid Polyquaternium-10, look for products with these ingredients instead:
Polyquaternium-7, Guar Hydroxypropyltrimonium Chloride, Hydroxyethylcellulose
Frequently Asked Questions
Yes, Polyquaternium-10 has a safety rating of 9/10 and is generally considered safe for use in hair products. Extremely safe. Non-irritating, non-sensitizing, and non-toxic. CIR panel reviewed and considers safe in cosmetic formulations. No environmental concerns at typical use levels.
Polyquaternium-10 is CG-method approved and is generally considered safe for curly hair.
Yes, Polyquaternium-10 is approved for the Curly Girl method.
Some alternatives to Polyquaternium-10 include: Polyquaternium-7, Guar Hydroxypropyltrimonium Chloride, Hydroxyethylcellulose
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