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Emollient

CYCLOMETHICONE

CAS 69430-24-6 / 556-67-2 / 541-02-6 / 540-97-6
45

Safety score · 0–100

Moderate

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

A cyclic silicone mix giving the silky, fast-evaporating feel in serums and primers. EU is phasing it out — D4 is restricted as PBT/vPvB; D5/D6 face aquatic toxicity scrutiny.

Skin benefits

  • Silky, evaporating skin feel
  • Spreads pigments evenly
  • Carrier for other actives

Known concerns

  • D4 EU restricted as PBT/vPvB
  • D5/D6 under aquatic toxicity scrutiny
  • Environmental persistence
  • Bioaccumulation concerns

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.