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Semi-permanent hair dye

HC YELLOW NO. 8

CAS 66612-11-1
38

Safety score · 0–100

Caution

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

HC Yellow No. 8 is a semi-permanent hair dye colorant in the broader HC family. These nitro hair dyes face ongoing EU safety review for sensitization and genotoxicity concerns, and consumer-facing tolerance is mixed.

Skin benefits

  • Provides yellow tonal shades in hair colour products
  • Allows non-oxidative semi-permanent dye options
  • Useful in colour-formulation flexibility

Known concerns

  • Hair-dye HC colorants have raised genotoxicity and sensitization questions
  • Aromatic nitro hair dyes face increasing EU regulatory restriction
  • Possible contact allergy in salon and consumer settings
  • Environmental persistence and aquatic toxicity flagged for HC dyes
  • Some related HC dyes restricted or banned under EU Annex III/II

References

EU

EU CosIng database

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

Same plant / compound family

38
HC YELLOW NO. 10
Hair dye (HC nitrophenylamine)
 42
HC YELLOW NO. 11
Other
 30
HC YELLOW NO. 12
Other
 55
HC YELLOW NO. 13
Hair Dye
 50
HC YELLOW NO. 14
Direct hair dye
 50
HC YELLOW NO. 15
Hair Dye

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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.