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Colorant

NAPHTHAZARIN

CAS 475-38-7
25

Safety score · 0–100

Caution

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

A reactive naphthoquinone dye with multiple GHS irritation/toxicity flags. Not on EU positive lists for cosmetic colorants — defaulted to red.

Function

COLORANTHAIR CONDITIONING

Skin benefits

  • Color

Known concerns

  • Harmful by multiple exposure routes
  • Skin and eye irritant
  • Quinone reactivity
  • Not approved as cosmetic colorant

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, so always read the physical product label and consult a healthcare professional for personal concerns.