Banned hair dye intermediate
4-Nitro-1,2-phenylenediamine
Safety score · 0–100
Avoid
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
A nitro-phenylenediamine once used in hair dyes that is now banned for cosmetic use in the EU because of genotoxicity and skin sensitisation concerns. It should not appear in finished consumer products.
Skin benefits
- Historically used as an oxidative hair dye intermediate
- Provides red-orange shades in dye systems
Known concerns
- Strong skin sensitiser with high allergy potential
- Genotoxicity and mutagenicity concerns flagged by SCCS
- Prohibited in EU cosmetics under Annex II for hair dye and skin use
- Cross-reactivity with other aromatic amines in sensitised users
References
EU CosIng database
European Commission cosmetic ingredient registry: regulatory status, restrictions, authorised functions.
Related banned hair dye intermediates
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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.