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Colorant

HC Green No 1

CAS 52136-25-1
5

Safety score · 0–100

Avoid

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

HC Green No 1 — a semi-permanent hair dye PROHIBITED in EU cosmetics under Annex II after SCCS review flagged genotoxicity concerns. Should not be in any product sold in Europe.

Skin benefits

  • Historically used as semi-permanent hair dye
  • No current cosmetic-safe role

Known concerns

  • EU Annex II — prohibited substance in cosmetics
  • Genotoxicity / mutagenicity concerns
  • Removed during SCCS review of hair dyes

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.