Film Former
BUTENE/PROPYLENE COPOLYMER
Safety score · 0–100
Good
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
A high-MW hydrocarbon copolymer of butene and propylene — used as a clean skin-conditioning film former and plasticiser in sticks and waterproof colour. Inert at finished-product level; biodegradation is slow.
Skin benefits
- Skin-conditioning hydrocarbon polymer
- Film-forming for water resistance
- Plasticiser for sticks and balms
- Improves long-wear feel
Known concerns
- Slow biodegradation
- Petroleum-derived
- Residual monomer must be controlled
- Limited independent cosmetic 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, so always read the physical product label and consult a healthcare professional for personal concerns.