Film Former
POLYURETHANE-73
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
A hydrogenated polyurethane that thickens water-based formulas and leaves a flexible, hard-wearing film on skin or nails. Considered safe in finished, fully reacted form, with the usual purity caveat about residual isocyanate monomers.
Function
Skin benefits
- Thickens water-based formulations
- Forms durable, flexible films
- Improves wear-time of pigment-based products
Known concerns
- Residual isocyanate concern in poorly purified grades
- Sparse public toxicology data on this specific number
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.