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Antioxidant

METHYLSILANOL ASCORBATE

CAS 187991-39-5 Updated
72

Safety score · 0–100

Fine

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

About

An organosilicon ester of vitamin C designed to stabilise ascorbate and deliver it to skin. Provides antioxidant and brightening benefits with better stability than free vitamin C, though efficacy varies.

Function

ANTIOXIDANT

Skin benefits

  • Stabilised vitamin C delivery
  • Antioxidant
  • Conditioning
  • Brightening

Known concerns

  • Releases vitamin C — pH and oxidation sensitive
  • Possible irritation on sensitised skin
  • Mixed evidence on skin penetration vs ascorbic acid

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 — always read the physical product label and consult a healthcare professional for personal concerns.