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Trisodium 5-hydroxy-1-(4-sulphophenyl)-4-(4-sulphophenylazo)pyrazole-3-carboxylate (CI 19140)
May aggravate
Safety summary
Generally safe for hair dyeing applications. Allergic reactions are rare but possible, especially for those with dye sensitivities.
CAS Number
1934-21-0
For informational purposes only. This is not medical advice. Always patch test new products and consult a dermatologist for skin concerns.