Film Former
BIS-HEMA POLY(PENTYLENE/HEXAMETHYLENE CARBONATE)/IPDI COPOLYMER
Safety score · 0–100
Moderate
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
A HEMA-end-capped polycarbonate urethane used in UV-cure nail gels. Combines two flagged sensitisers — HEMA (EU restricted since 2020) and IPDI. Nail-technician allergy rates have driven the regulatory action.
Function
Skin benefits
- Forms tough, flexible films
- Long-wear nail performance
- UV-curable
- Good adhesion and chip resistance
Known concerns
- HEMA is a recognised contact sensitiser
- HEMA restricted in EU non-pro nail gels since 2020
- Trace residual IPDI — also a sensitiser
- Sensitisation risk particularly for nail technicians
- Not biodegradable
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, so always read the physical product label and consult a healthcare professional for personal concerns.