Hair Conditioning
BUTYL ACRYLATE/ETHYLTRIMONIUM CHLORIDE METHACRYLATE/STYRENE COPOLYMER
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
A cationic copolymer used in deodorants, hair conditioners, and film-formers. The quaternary group binds to hair and skin for conditioning, but residual styrene and butyl acrylate monomers keep it in the cautious Fine band.
Function
Skin benefits
- Cationic conditioning for hair and skin
- Film-forming durability in deodorants and styling products
- Improves substantivity to keratin surfaces
- Multifunctional use across product types
Known concerns
- Residual styrene monomer (IARC 2B)
- Cationic groups can be mildly eye-irritating
- Butyl acrylate is a known skin sensitizer
- Microplastic environmental persistence
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.