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Skin Conditioning

CARBOCYSTEINE

CAS 638-23-3 Updated
72

Safety score · 0–100

Fine

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

About

A cysteine derivative (S-carboxymethyl-L-cysteine) used as a hair- and skin-conditioning amino acid. Mild GHS profile; widely used pharmaceutically as a mucolytic with a long safety record.

Function

ANTI-SEBUMSKIN CONDITIONING

Skin benefits

  • Sulfur-containing amino acid derivative
  • Antioxidant and skin-conditioning support
  • Hair-strengthening cysteine analogue

Known concerns

  • Mild GHS H302 (oral) and H319 (eye irritation) at neat substance
  • Limited cosmetic-specific safety reviews

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.