Banned azo colorant
1-[(4-Methyl-2-nitrophenyl)azo]-2-naphthol
Safety score · 0–100
Avoid
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
An azo dye historically used as a red-orange pigment that is now banned from EU cosmetics. It is classified as carcinogenic and can release toxic aromatic amines on metabolic reduction in skin.
Skin benefits
- Provides intense red-orange coloration when used as a dye
- Historically used as a textile and pigment colorant
Known concerns
- Classified as a carcinogen and listed on EU CMR substance lists
- Banned in EU cosmetics under Annex II of Regulation 1223/2009
- Azo dye that can release aromatic amines linked to bladder cancer
- Genotoxic and mutagenic in laboratory studies
References
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.