Film Former
HDI/PEI-45/SMDI CROSSPOLYMER
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
A complex polymer network of polyethyleneimine crosslinked with HDI and SMDI diisocyanates. Cured polymer is inert; concerns center on residual diisocyanates (respiratory sensitizers) and trace ethylenimine.
Function
Skin benefits
- Absorbent and plasticizing polymer
- Crosslinked structure limits monomer migration
- Versatile film-forming use
Known concerns
- HDI and SMDI are documented respiratory sensitizers in uncured form
- PEI may have residual ethylenimine — IARC 2B
- Strict residual monomer control essential
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.