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Hair Dye

HC YELLOW NO. 15

CAS 138377-66-9
50

Safety score · 0–100

Moderate

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

HC Yellow No. 15 is a nitroaromatic direct hair dye used to add yellow tones to hair colorants. EU regulators restrict use levels for this dye class because of sensitization and impurity considerations.

Skin benefits

  • Provides yellow color in semi-permanent and oxidative hair dyes
  • Stable direct dye at typical use concentrations

Known concerns

  • Nitro-aromatic hair dye family with sensitization concerns
  • EU restrictions on maximum concentration and product type
  • Limited long-term safety data versus other HC Yellow dyes
  • Not approved for eyelash or eyebrow tinting

References

EU

EU CosIng database

European Commission cosmetic ingredient registry: regulatory status, restrictions, authorised functions.

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Same plant / compound family

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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.