Film Former
BIS-HEMA POLY(CAPROLACTONE NEOPENTYL GLYCOL)/IPDI COPOLYMER
Safety score · 0–100
Moderate
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
A UV-cured nail polymer based on HEMA and isophorone diisocyanate. Cured film is inert; uncured HEMA is one of the top causes of new contact-allergy cases in nail clients.
Function
Skin benefits
- Cures into a tough flexible film for gel nail polish
- Provides chip-resistant wear
- Cured film is essentially inert
Known concerns
- Uncured monomer (HEMA) is a known sensitiser — can cause allergic contact dermatitis
- Diisocyanate (IPDI) residues if poorly polymerised
- Industrial origin; not for skin contact in liquid form
- Reported uptick in nail-tech HEMA allergy
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.