Plasticizer
METHYLBUTENE/PIPERYLENE COPOLYMER
Safety score · 0–100
Fine
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
A diene hydrocarbon copolymer used as a plasticizer in cosmetic films. The unhydrogenated polymer carries residual reactive monomers and limited cosmetic-specific safety data, anchoring it to a cautious Fine.
Function
Skin benefits
- Improves flexibility of film-forming systems
- Functions as plasticizer
- Enhances texture of cosmetic films
Known concerns
- Unhydrogenated diene polymer with residual reactive monomers
- Piperylene monomer residue is reactive
- Limited public toxicology data for this INCI
- Unsaturated polymer may oxidize over shelf life
References
EU CosIng database
European Commission cosmetic ingredient registry: regulatory status, restrictions, authorised functions.
Related plasticizers
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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.