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Film Former

HEMA/METHACRYLAMIDOPROPYLTRIMONIUM CHLORIDE/STYRENE COPOLYMER

CAS - Updated
55

Safety score · 0–100

Moderate

Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.

About

A HEMA-based cationic styrenic copolymer film former. Cured polymer is inert, but HEMA monomer is a known nail-product sensitizer; default-down on residual monomer risk.

Skin benefits

  • Film former for hair and skin products
  • Cationic moiety adds conditioning
  • Adds wear and structure

Known concerns

  • HEMA monomer is a known nail-product sensitizer
  • Styrene class concerns about residuals
  • Limited cosmetic-specific data on the cured polymer

References

EU

EU CosIng database

European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.

Related film formers

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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.