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A synthetic colorant used in hair dyes, particularly for red and orange shades. It is often used in combination with other dyes.
May aggravate
Safety summary
Can be a sensitizer and cause allergic reactions in some individuals. Its use is restricted in some regions due to potential for skin irritation and sensitization.
CAS Number
831-52-7
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.