Hair Conditioning
POLYQUATERNIUM-39
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
A cationic conditioning polymer used in hair care to reduce static and improve combability. Generally safe at typical use levels; can mildly irritate eyes in rinse-off use.
Function
Skin benefits
- Hair and skin conditioning polymer
- Reduces static and frizz
- Improves wet/dry combability
- Substantive to keratin
Known concerns
- Cationic polymers can build up on hair
- Mild eye irritation potential
- Quaternary ammonium chemistry
References
EU CosIng database
European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.
Related hair conditionings
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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve — always read the physical product label and consult a healthcare professional for personal concerns.