Film Former

POLYURETHANE-33

Updated April 2026

74

Safety score · 0–100

Fine

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

About

A flexible polyurethane film former used in long-wear cosmetics like mascara. Cured polymer is inert; manufacturing controls residual monomers.

Function

BINDING

Skin benefits

Flexible film former for long wear
Good water resistance
Polymer too large for skin penetration
Common in mascara and color cosmetics

Known concerns

Possible residual isocyanate from manufacture
Not biodegradable

References

EU

EU CosIng database

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

Related film formers

BIS-(METHOXY PEG-45 POLYCAPROLACTONE) HEXANEDICARBAMATE

BIS-AMINOPROPYL DIMETHICONE/IPDI COPOLYMER

BIS-BENZYL BUTYLENE GLYCOL/IPDI COPOLYMER

BIS-HEA POLY(1,4-BUTANEDIOL)-9/IPDI COPOLYMER

BIS-HEA POLY(HEXAMETHYLENE/METHYLPENTYLENE CARBONATE)/IPDI COPOLYMER

BIS-HPA/PENTAERYTHRITOL TRIACRYLATE PPG-12/IPDI COPOLYMER

BIS-METHOXY PEG-114 POLYCAPROLACTONE DIOL/IPDI COPOLYMER

BUTYL DIMETHICONE PROPYL METHACRYLATE/METHYL METHACRYLATE/VA COPOLYMER

Check your shelf

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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.