Film Former
BIS-(HEMA/ETHYLHEXYL) POLY(1,4-BUTANEDIOL)-9/TMDI/IPDI COPOLYMER
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
A HEMA/methacrylate-terminated polyurethane oligomer for nail and lash gels. Cured polymer is inert, but residual HEMA monomer is a known nail-industry allergen — supplier quality matters.
Skin benefits
- Photo-curable nail/lash film former
- Strong adhesion and wear
- Customisable cure profile via methacrylate ends
Known concerns
- Free HEMA / methacrylate monomer can sensitize (well documented nail allergen class)
- Residual TMDI/IPDI isocyanate if poorly cured
- Mystery polymer; limited published cosmetic safety data
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.