Film Former
POLYBUTYL METHACRYLATE
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
A flexible acrylic film former common in nail polish, mascara and waterproof makeup. The cured polymer is essentially inert; the only concern is trace unreacted monomer, which is a known sensitizer.
Function
Skin benefits
- Forms a flexible water-resistant film
- Used in nail polish and mascara
- High-MW inert polymer
Known concerns
- Trace residual butyl methacrylate monomer possible — sensitizer
- Synthetic polymer — environmental persistence
- Solvent system in nail products may irritate
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.