Film Former
POLYESTER-42
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
A castor-oil and phthalic-anhydride polyester used as a film former in long-wear cosmetics. The cured polymer is inert; defaulted to Fine because phthalic-class precursor data warrants caution.
Function
Skin benefits
- Durable, smooth films
- Long-wear performance in color cosmetics
- Water resistance
- Adheres pigment evenly
Known concerns
- Phthalic-anhydride-derived backbone — fully reacted polymer is inert but raw material has hazard pictograms
- Limited public toxicology on this specific INCI
- Default-down for phthalic-class precursor caution
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, so always read the physical product label and consult a healthcare professional for personal concerns.