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Antioxidant

BUTYROYL GLUTATHIONE

CAS 690633-16-0 Updated
72

Safety score · 0–100

Fine

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

About

Butyryl glutathione — glutathione modified with a butyric acid group to help it cross skin. Marketed for brightening. Generally mild but data is mostly proprietary.

Skin benefits

  • Antioxidant tripeptide activity
  • Better penetration than plain glutathione
  • Used in brightening serums

Known concerns

  • Proprietary derivative with sparse public data
  • Brightening claims contested
  • Vendor-led efficacy studies dominate

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.