Nitro hair dye
Ethanol, 2,2′-[(2-nitro-1,4-phenylene)diimino]bis-(9CI)
Safety score · 0–100
Caution
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
A nitro phenylenediamine hair dye intermediate that imparts red-violet shades, but is subject to strict EU restriction or prohibition due to genotoxicity and nitrosamine concerns.
Skin benefits
- Historically used as a semi-permanent hair dye colorant
- Provides red to violet shades on hair
Known concerns
- Nitro-phenylenediamine class linked to genotoxicity concerns
- Potential for nitrosamine formation in formulation
- SCCS has flagged related nitro hair dyes for restriction
- Skin sensitization potential
- Use restricted or prohibited in EU cosmetics depending on entity
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.