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Colorant

ACID ORANGE 3

CAS 6373-74-6 Updated
35

Safety score · 0–100

Caution

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

About

A nitro/sulfonated azo dye used in semi-permanent hair color. EU Annex III restricted with concentration limits and class concerns; not for skin care.

Function

HAIR DYEING

Skin benefits

  • Imparts orange hair color

Known concerns

  • EU Annex III hair dye restriction
  • Nitro azo dye class concerns
  • Possible sensitizer

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.