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A synthetic organic compound used as an oxidative hair dye ingredient, contributing to color formation in permanent hair dyes.
May aggravate
Safety summary
Hair dye ingredients can be sensitizers; patch testing is recommended. Use is restricted in some regions.
CAS Number
337906-36-2
1% line marker
This ingredient is commonly used as a marker to identify where ingredients drop below 1% concentration on the label.
For informational purposes only. This is not medical advice. Always patch test new products and consult a dermatologist for skin concerns.