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Film Former

POLYPHENYLSILSESQUIOXANE

CAS 70131-69-0
78

Safety score · 0–100

Fine

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

A phenyl-functional silicone resin that gives makeup primers their pore-blurring, soft-focus look. Inert on skin and well tolerated; the trade-off is environmental persistence typical of silicone polymers.

Skin benefits

  • Soft-focus blurring effect
  • Sebum and shine control
  • Smooth dry-touch finish
  • Highly stable film former

Known concerns

  • High-molecular-weight silicone — environmental persistence
  • Limited dermal-penetration risk but accumulates in waste streams

References

EU

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.