Film Former
PHTHALIC ANHYDRIDE/BENZOIC ACID/TRIMETHYLOLPROPANE COPOLYMER
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
A polyester-style film former used mostly in nail polishes and long-wear lip products to give a glossy, durable finish. The polymer itself is inert; the safety story depends on tight control of residual monomers.
Function
Skin benefits
- Forms hard, glossy nail and lip films
- Improves product stability and wear
- Compatible with many resin systems
Known concerns
- Phthalic anhydride monomer is an irritant
- Trace residual monomers possible
- Mostly used in nail products
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.