Film Former
1,4-BUTANEDIOL/SUCCINIC ACID/ADIPIC ACID/HDI COPOLYMER
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
A polyurethane-polyester copolymer (HDI-based) used as a film-former on skin and hair. Generally safe in finished products; requires strict diisocyanate residue control and is subject to EU microplastic phase-out.
Function
Skin benefits
- Flexible film
- Long-wear binding
- Conditioning
Known concerns
- HDI residual monomer requires strict control
- Microplastic-class — EU REACH 2023/2055 restriction
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.