Film Former
POLYURETHANE-45
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
A caprolactone-based urethane polymer used as a flexible film former in skin and nail products. Cured polymer is well-tolerated; residual HDI monomer is the main purity-dependent concern.
Function
Skin benefits
- Forms flexible, durable films
- Caprolactone-based softness
- Good adhesion and gloss
- Versatile cosmetic binder
Known concerns
- Trace residual HDI possible
- Not biodegradable
- Sensitisation risk if poorly purified
- Limited cosmetic-specific safety publications
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.