Film Former
ISOBUTYLENE/ETHYLMALEIMIDE/HYDROXYETHYLMALEIMIDE COPOLYMER
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
A maleimide-isobutylene copolymer used in hair styling for humidity-resistant fixative films. Cured polymer is well-tolerated; residual maleimide monomer is the main purity-dependent sensitisation concern.
Function
Skin benefits
- Forms flexible hair-fixing films
- Long-hold styling
- Humidity resistance
- Soft, non-flaking film
Known concerns
- Maleimide monomers can be sensitisers
- Limited published safety data
- Not biodegradable
- Possible irritation in eye-area products
References
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.