4-Amino-m-cresol

Also known as: 4-amino-3-methylphenol

INCI name: 4-Amino-m-Cresol

What it does

A colour ingredient in oxidative (permanent) hair dyes, related to the aminophenols.

Benefits

Used to build permanent shades.

Concerns & Risks

Allergy is the main concern. The EU's scientific committee concluded in 2005 that it does not pose a risk at up to 1.5% 'apart from its sensitising potential'. Published data on how often people react to it are limited.

Comedogenic rating

0/5

Non-comedogenic (0)

Suitable for

People without hair-dye allergy

Avoid if

You have reacted to a hair dye before

Typical concentration

EU maximum 1.5% on the head after mixing. India and US: no specific limit verified.