Film Former
NORBORNANEDIAMINE/RESORCINOL DIGLYCIDYL ETHER CROSSPOLYMER
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
A synthetic crosslinked polymer used to form a film on skin — helps products stay put and feel smooth. The finished polymer is generally safe, though its building blocks warrant caution.
Norbornanediamine/Resorcinol Diglycidyl Ether Crosspolymer (CAS 2176443-64-2) is a crosslinked polymer of norbornanediamine and resorcinol diglycidyl ether. Functions as a film-forming agent. No GHS hazard codes for the polymer itself, no EU restrictions. However, the monomer resorcinol diglycidyl ether is an epoxide with known sensitization potential, and resorcinol itself is EU-restricted (Annex III) in some applications. The crosslinked polymer form has much lower bioavailability than free monomers, but residual monomer levels are a theoretical concern.
Function
Skin benefits
- Film-forming — improves product longevity
- Smooth skin feel
Known concerns
- Resorcinol-derived — residual resorcinol monomers could be irritating/sensitizing
- Diglycidyl ether monomers are known sensitizers
- Very new ingredient (CAS registered recently) — limited long-term safety data
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.