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Colorant

HYDROXYANTHRAQUINONEAMINOPROPYL METHYL MORPHOLINIUM METHOSULFATE

CAS 38866-20-5 Updated
42

Safety score · 0–100

Moderate

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

About

A cationic anthraquinone hair colorant — adheres to hair fibers to give a reddish tone. Hair-dye chemistry with sensitization risk; treat as a cosmetic-only ingredient with patch testing.

Skin benefits

  • Reddish hair coloration
  • Substantive to keratin
  • Compatible with conditioning bases

Known concerns

  • Anthraquinone-class sensitization risk
  • Limited long-term safety data
  • Methosulfate counterion
  • Avoid eyes and broken skin

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.