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Colorant

HC BLUE NO. 10

CAS 173994-75-7/102767-27-1
35

Safety score · 0–100

Caution

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

A semi-permanent nitroaromatic blue hair dye (HC class). EU Annex III restricted with concentration limits and class-level safety concerns.

Function

HAIR DYEING

Skin benefits

  • Imparts blue hair color

Known concerns

  • EU Annex III hair dye restriction
  • Nitroaromatic dye class concerns
  • Possible sensitizer

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.