Film Former
BIS-ISOSTEAROYL CASTOR OIL/DIMER DILINOLEATE COPOLYMER
Safety score · 0–100
Good
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
A conditioning copolymer of castor oil and dimer dilinoleate fatty acids that forms a flexible, comfortable film. Soft, water-resistant feel; ideal for lip and long-wear formulations.
Function
Skin benefits
- Conditioning, film-forming feel
- Long-wear comfort in lip and colour
- Sustained moisture seal without occlusive heaviness
Known concerns
- High molecular weight may build up in repeat use
- Limited public toxicology dossier
- Potential acne triggers in oil-prone skin
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.