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Colorant

CI 12420

CAS 6471-51-8 Updated
38

Safety score · 0–100

Caution

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

About

CI 12420 — a monoazo direct hair dye permitted only for hair use in the EU due to potential release of carcinogenic aromatic amines. Upper-red and best avoided where safer alternatives exist.

Skin benefits

  • Provides red coloration in EU-permitted hair dye use

Known concerns

  • Monoazo dye restricted to hair dye use only
  • Potential release of carcinogenic aromatic amines under reducing conditions
  • Sensitisation risk typical of direct hair dyes

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.