Film Former
POLYURETHANE-21
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
A polyurethane film former used in long-wear makeup and styling products. The cured polymer is effectively inert on skin; the main flag is tight control of residual diisocyanate sensitisers.
Function
Skin benefits
- Flexible durable film former
- Long-wear performance in mascara and makeup
- Useful styling polymer
Known concerns
- Residual diisocyanate monomers must be controlled (sensitiser)
- Persistence concerns for cured polymer
- Limited specific public dossier
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.