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Prohibited hair dye

HC BROWN NO. 2

CAS 83803-99-0
20

Safety score · 0–100

Caution

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

HC Brown No. 2 is a semi-permanent hair dye that the EU has banned from cosmetics. Without a positive safety opinion from the EU's scientific committee, it cannot be used in personal care products.

Skin benefits

  • Was used as a semi-permanent hair colorant for brown shades
  • Historically valued for direct dye properties

Known concerns

  • Banned in EU cosmetics (Annex II) without positive SCCS clearance
  • Nitrophenylenediamine-type structure with sensitization potential
  • Possible genotoxic effects flagged in screening data
  • No demonstrated safe use level in cosmetic products

References

EU

EU CosIng database

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

Related prohibited hair dyes

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.