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HC BLUE NO. 17

CAS 16517-75-2
52

Safety score · 0–100

Moderate

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

About

Hc Blue No. 17 is a cosmetic ingredient used in product formulations. Exercise caution due to limited available safety data.

HC Blue No. 17 is a nitroamino pyridine compound used as a direct dye in semi-permanent hair color products. The EU Cosmetics Regulation requires hair dye intermediates to be specifically listed and restricted in Annex III for use in hair dye formulations. Non-approved hair dye substances are prohibited. This compound requires further EU regulatory review for cosmetic use.

Skin benefits

  • Provides blue/violet color tones in semi-permanent hair dyes
  • Good solubility in cosmetic vehicle systems

Known concerns

  • Potential genotoxicity — requires EU safety assessment for hair dye use
  • May be restricted under EU Annex III pending evaluation
  • Limited long-term sensitization data
  • Possible metabolite toxicity

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.