Film Former
BIS-HEMA POLY(1,4-BUTANEDIOL)-22/IPDI COPOLYMER
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
A polyurethane-style film former made from polybutanediol-22 and IPDI. Gives long-wear cosmetic films better water resistance. Cured polymer is generally safe; residual monomer is the concern.
Skin benefits
- Film-forming polymer for long-wear cosmetics
- Helps water and rub resistance
- Skin-surface only at high molecular weight
Known concerns
- IPDI base raises questions about residual diisocyanate monomer
- Limited compound-specific safety data
- Potential sensitisation if unreacted monomer is present
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.