Film Former
DIMETHYLHYDROGENSILOXY PHENYL POLYSILSESQUIOXANE
Safety score · 0–100
Good
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
A phenyl-silsesquioxane resin with high shine and long-lasting film properties. Inert once cured — standard silicone safety profile.
Dimethylhydrogensiloxy phenyl polysilsesquioxane is a phenyl-substituted silsesquioxane (T-unit) resin with trimethylsiloxy / dimethylhydrogensiloxy end groups. The phenyl content raises refractive index and optical clarity, making it useful in lip gloss, primers and optical-blur cosmetics. Like other reactive silicone resins, Si–H groups react during cure to form the final inert network. CIR and SCCS consider the phenyl-silicone resin family safe as used. Not listed on EU Annex II/III. Environmental persistence is the main caveat.
Function
Skin benefits
- Glossy, high-refractive finish
- Long-wearing film
- Smooth slip
Known concerns
- Raw-material Si-H handling
- Silicone persistence
- Not biodegradable
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.