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Film Former

BIS-HEMA POLY(CAPROLACTONE/PENTAERYTHRITOL)/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-end-capped urethane used in nail gels. HEMA monomer is a well-documented sensitiser — the EU banned HEMA in non-professional nail products in 2020 due to widespread allergy reports. Lower-yellow at best.

Function

BINDING

Skin benefits

  • Forms tough, flexible films
  • Good adhesion in nail products
  • Long-wear performance
  • Compatible with UV-cure systems

Known concerns

  • HEMA is a recognised contact sensitiser
  • Residual HEMA banned in EU nail gels since 2020
  • Trace residual IPDI — also a sensitiser
  • Sensitisation risk for nail technicians
  • Not biodegradable

References

EU

EU CosIng database

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

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Same plant / compound family

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BIS-HEMA POLY(CAPROLACTONE/PENTAERYTHRITOL)/IPDI COPOLYMER SUCCINATE
Thickener

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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.