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Is p-Methylaminophenol Sulfate vegan?

p-Methylaminophenol Sulfate

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p-Methylaminophenol Sulfate, also known as Metol, is a synthetic aminophenol salt used as a colorant intermediate in hair dye formulations and historically as a photographic developer.

Also known as bis(4-Hydroxy-N-methylanilinium) sulphate, Metol
INCI name p-Methylaminophenol Sulfate
CAS number 55-55-0
EC number 205-768-2
CosIng ID 36626
Last reviewed 9 July 2026

An ingredient is considered vegan if it contains no animal-derived components at any point in its production.

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