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Restricted hair dye

2-[(2-Nitrophenyl)amino] ethanol

CAS 4926-55-0
32

Safety score · 0–100

Caution

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

Nitroaniline-class direct hair dye known as HC Yellow No. 11. EU regulation restricts its use to oxidative and non-oxidative hair colourants at low concentrations due to sensitisation and toxicology concerns.

Skin benefits

  • Provides yellow tonal colour in oxidative and direct hair dyes
  • Cost-effective hair colourant chromophore

Known concerns

  • Nitroaromatic amine class with known mutagenicity flags
  • EU Cosmetics Annex III restricted with maximum-use concentrations
  • Skin sensitiser; positive in patch-test studies
  • Not permitted in cosmetics other than restricted hair dye use
  • Systemic exposure must be minimised

References

EU

EU CosIng database

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

Related restricted hair dyes

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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.