PLDEFRESITJęzyk: polski
INCI name

2-AMINO-3-HYDROXYPYRIDINE

2-Amino-3-hydroxypyridine

Hair dyeingreviewed

An aromatic amine used in oxidative hair dyes.

What it is

2-Amino-3-hydroxypyridine (2-aminopyridin-3-ol) is a pyridine derivative with an amino and a hydroxyl group. CosIng lists it as a hair-dyeing ingredient.

Where it is used

Found in permanent (oxidative) hair colours.

Limits of interpretation

The INCI list shows which ingredients are present, not how much of each. Above 1%, ingredients are listed in descending order of weight; below 1% the order is free.

Its position on the list does not show the final shade, which depends on the combination of dyes in the product.

Functions

Hair dyeing
Imparting color to hair. Hair dyeing preparations may be temporary, semi-permanent, permanent, depending on the length of time the colorant remains on the hair.

EU regulation

EU · Annex III, entry 2112-Aminopyridin-3-ol; 2-Amino-3-Hydroxypyridine
Product type
(a) Hair dye sub­stance in oxidat­ive hair dye products (b) Products in­tended for col­ouring eyelashes
Conditions and warnings
(a) To be printed on the la­bel: The mixing ratio. “Hair colourants can cause severe allergic reac­tions. Read and follow instruc­tions. This product is not in­tended for use on persons under the age of 16. Temporary ‘black henna’ tattoos may increase your risk of allergy. Do not colour your hair if: — you have a rash on your face or sensitive, irri­tated and damaged scalp, — you have ever experi­enced any reaction after colouring your hair, — you have experienced a reaction to a tempor­ary b‘lack henna’ tattoo in the past.” (b) As from 3 March 2018, to be printed on the la­bel: The mixing ratio. “This product can cause severe allergic reactions. Read and follow instruc­tions. This product is not in­tended for use on persons under the age of 16. Tem­porary ‘black henna’ tattoos may increase the risk of al­lergy. Eyelashes shall not be co­loured if the consumer: — has a rash on the face or sensitive, irritated and damaged scalp, — has experienced any re­action after colouring hair or eyelashes,— has experienced a reac­tion to a temporary ‘black henna’ tattoo in the past. For professional use only. Rinse eyes immediately if product comes into contact with them”
As of
3 November 2026 · (EU) 2017/237

Products with this ingredient (13)

Check a full ingredient list