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This compound is a key ingredient in many permanent hair dyes, responsible for creating long-lasting color by reacting with other dye precursors.
May aggravate
Safety summary
It is a known sensitizer and can cause severe allergic reactions, including skin irritation, redness, and swelling, especially in individuals allergic to PPD (p-phenylenediamine). A patch test is highly recommended before use.
CAS Number
4698-29-7
For informational purposes only. This is not medical advice. Always patch test new products and consult a dermatologist for skin concerns.