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Hair Dye

HC YELLOW NO. 7

CAS 104226-21-3
55

Safety score · 0–100

Moderate

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

A nitroaromatic direct dye giving yellow tones in semi-permanent hair color. SCCS-evaluated and EU Annex III-restricted; like other nitro hair dyes it carries sensitization potential and benefits from a patch test.

Function

HAIR DYEING

Skin benefits

  • Effective yellow tonality colorant for semi-permanent hair color
  • SCCS-evaluated and EU Annex III-listed at restricted levels
  • No mutagenicity concerns in standard regulatory testing

Known concerns

  • Nitroaromatic amine — class sensitization potential
  • EU concentration cap reflects identified risk
  • Patch test recommended for sensitive users

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.