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Hair Colorant

4-AMINO-3-NITROPHENOL

CAS 610-81-1
28

Safety score · 0–100

Caution

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

An oxidative hair-dye intermediate giving reddish tones. EU restricts max use in oxidative formulas because it can sensitise skin and cause allergic reactions.

Function

HAIR DYEING

Skin benefits

  • Provides reddish-orange tones in oxidative hair color

Known concerns

  • Skin sensitiser — restricted under EU Annex III
  • GHS hazard: harmful if swallowed/inhaled
  • Aquatic 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, so always read the physical product label and consult a healthcare professional for personal concerns.