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Skin Conditioning

METHYL TRYPTOPHANATE HCL

CAS 7524-52-9 Updated
72

Safety score · 0–100

Fine

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

About

The methyl ester of tryptophan (essential amino acid). Used as a skin / hair conditioning agent. Hydrolyses to tryptophan in skin; structurally benign but photostability and limited cosmetic-specific data keep it in yellow.

Function

HAIR CONDITIONING

Skin benefits

  • Amino-acid derivative — skin conditioning
  • Possible antioxidant role via indole moiety
  • Hair conditioning

Known concerns

  • Limited cosmetic-specific safety data
  • Tryptophan derivatives can degrade photochemically — photostability caveat

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.