Is 4-(Phenylazo)-m-phenylenediamine vegan?

4-(Phenylazo)-m-phenylenediamine

Vegan

4-(Phenylazo)-m-phenylenediamine is a synthetic azo compound used as a hair dye ingredient, also known as Basic Brown 1.

Also known as Basic Brown 1
INCI name 4-(Phenylazo)-m-phenylenediamine
CAS number 495-54-5
EC number 207-803-7
CosIng ID 31138
Last reviewed 9 July 2026

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