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Film Former

BIS-HEMA POLY(PENTYLENE/HEXAMETHYLENE CARBONATE)/IPDI COPOLYMER

CAS 2139340-35-3 Updated
56

Safety score · 0–100

Moderate

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

About

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

FILM FORMING

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

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.