Film Former
ISOBUTYLENE/MA COPOLYMER
Safety score · 0–100
Good
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
An isobutylene/maleic anhydride copolymer — used as a hair fixative and film former. Hydrolyzed to its acid form in water, the polymer is inert and CIR-reviewed safe at cosmetic use levels.
Function
Skin benefits
- Effective hair fixative providing flexible hold
- Forms durable film with water-resistance
- pH-responsive viscosity control
- Compatible with both anionic and nonionic systems
Known concerns
- Anhydride form requires hydrolysis to acid groups
- CIR has reviewed safe at cosmetic concentrations
References
EU CosIng database
European Commission cosmetic ingredient registry: regulatory status, restrictions, authorised functions.
Related film formers
Same plant / compound family
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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve, so always read the physical product label and consult a healthcare professional for personal concerns.