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Skin Conditioning

DIHYDROXYPROPYL CYSTINE

Updated
70

Safety score · 0–100

Fine

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

About

Dihydroxypropyl Cystine — a glyceryl-modified cystine amino acid used for skin and hair conditioning. Amino acid backbone is benign; limited public cosmetic data keeps it in the yellow band.

Skin benefits

  • Cystine amino-acid derivative for skin and hair conditioning
  • Source of sulphur for keratin support
  • Generally well tolerated in cosmetic vehicles

Known concerns

  • Limited public cosmetic safety data
  • No CIR/SCCS dossier identified
  • Possible odor with degradation
  • Use level data sparse

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.