Colorant
CI Acid Black 131 and its salts, when used as a substance in hair dye products
Safety score · 0–100
Avoid
Derived from EU CosIng regulatory status, PubChem hazard data and published research. How we score.
About
A coal tar-derived hair dye intermediate severely restricted in the EU due to carcinogenic impurity concerns and skin sensitisation. Listed in the regulation's restricted hair-colourant annex.
Skin benefits
- Historical hair-dye intermediate
Known concerns
- Coal-tar derivative with carcinogenic impurity concerns
- Listed under EU Annex II restrictions for hair dye use
- Skin sensitisation
- Not safe in unrestricted cosmetics
References
EU CosIng database
European Commission cosmetic ingredient registry — regulatory status, restrictions, authorised functions.
Related colorants
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This profile is for educational purposes and does not constitute medical advice. Regulatory status and scientific understanding evolve — always read the physical product label and consult a healthcare professional for personal concerns.