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Film Former

BIS-(HEMA/ETHYLHEXYL) POLY(1,4-BUTANEDIOL)-9/TMDI/IPDI COPOLYMER

60

Safety score · 0–100

Fine

Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.

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

EU CosIng database

European Commission cosmetic ingredient registry: regulatory status, restrictions, authorised functions.

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BIS-HEMA POLY(1,4-BUTANEDIOL)-9/IPDI COPOLYMER
Film Former

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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.