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Skin Conditioning

METHIONINE

CAS 59-51-8 Updated
88

Safety score · 0–100

Good

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

About

An essential sulfur-containing amino acid used as a skin and hair conditioner and mild antioxidant. Decades of food and supplement safety data.

Skin benefits

  • Essential amino acid
  • Antioxidant via sulfur side chain
  • Skin and hair conditioning

Known concerns

  • No significant concerns at cosmetic concentrations

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.