Hair Conditioning
POLYQUATERNIUM-4
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
Polyquaternium-4 — a cationic conditioning polymer for hair products. Considered safe at use levels; can build up with very frequent use.
Function
Skin benefits
- Conditions hair and reduces static
- Improves wet combing
- Film-former for styling
Known concerns
- Buildup with frequent use
- Mild eye irritation
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.