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Sodium 4-[(2-hydroxy-1-naphthyl)azo]benzenesulphonate (CI 15510)
May aggravate
Safety summary
Generally considered safe for use in hair dyes. A patch test is recommended before full application to check for potential skin irritation or allergic reactions.
CAS Number
633-96-5
For informational purposes only. This is not medical advice. Always patch test new products and consult a dermatologist for skin concerns.