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Silicone film former

POLYMETHYLSILSESQUIOXANE/TRIMETHYLSILOXYSILICATE

CAS -
82

Safety score · 0–100

Good

Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.

A blended silicone resin and elastomer that forms a soft, breathable film on skin. It is widely used for smooth texture and long wear in sunscreens, primers, and color cosmetics with a strong safety record.

Function

NOT REPORTED

Skin benefits

  • Silicone elastomer/film former providing smooth skin feel
  • Improves spreadability and longevity of sunscreens and makeup
  • Inert and non-reactive on skin

Known concerns

  • Not biodegradable, environmental persistence concerns
  • Occlusive film may aggravate acne-prone skin in some users
  • Sourcing and microplastic-adjacent debate

References

EU

EU CosIng database

European Commission cosmetic ingredient registry: regulatory status, restrictions, authorised functions.

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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.