Film Former
POLYESTER-21
Safety score · 0–100
Good
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
A synthetic cosmetic polyester used to form a smooth, long-wearing film on skin. Considered non-reactive at use levels — too large to penetrate skin, with no documented sensitisation concerns.
Function
Skin benefits
- Synthetic film former with smooth feel
- Helps formulations adhere to skin
- Inert at cosmetic concentrations
- Improves wear time of colour cosmetics
Known concerns
- Polymer biodegradation depends on monomer mix
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.