Database/Hair Dyeing/2-Amino-3-Hydroxypyridine
100% petroleum · ISO 16128

Is 2-Amino-3-Hydroxypyridine natural?

No. Made from petrochemical pyridine via amination/hydroxylation; no natural route exists.

INCI name2-Amino-3-Hydroxypyridine
CAS16867-03-1
FormulaC5H6N2O · 110.11 Da
FunctionHair Dyeing
FeedstockManufactured industrially from petroleum-derived pyridine. Used as a…

How we scored it

Synthetic aminohydroxypyridine, petrochemical pyridine derivative -> 0.0.
What counts. ISO 16128-2 scores the atoms that remain in the final ingredient. Reagents, solvents, catalysts and protecting groups used during manufacture leave no mass behind and are not counted.

Where it comes from

Manufactured industrially from petroleum-derived pyridine. Used as a hair-dye coupler with no natural alternative route.

In plain English

A synthetic hair-dye ingredient made from petroleum-derived pyridine, used to help build colour in permanent hair dye.

Natural alternatives with the same function

Beta Vulgaris Root Powder 100% natural origin

A powder made by drying and grinding sugar beet root. Used as a natural colorant for hair dye…

 Bismuth Citrate 100% natural origin

A salt formed from bismuth metal and citric acid, a natural fermentation-derived fruit acid, used to buffer, chelate…

 Dihydroxyacetone 100% natural origin

The active self-tanning ingredient that reacts with skin's surface proteins to produce a temporary bronze colour; made by…

 Epicatechin 100% natural origin

An antioxidant compound naturally found in tea and cocoa, used in skin, hair and oral care. It's extracted…

 Lawsonia Inermis Extract 100% natural origin

A plant extract from the henna shrub, used to condition hair and skin and add a reddish tint.…

 Pyrogallol 100% natural origin

A hair-dye ingredient traditionally made by heating gallic acid, itself extracted from plant tannins in gallnuts, until it…

Structure

2D structure of 2-Amino-3-Hydroxypyridine

2-aminopyridin-3-ol

PubChem CID 28114 ↗

References

  1. 1ISO 16128-1:2016 and ISO 16128-2:2017 — Guidelines on technical definitions and criteria for natural and organic cosmetic ingredients and products. ISO, Geneva.
  2. 22-Amino-3-Hydroxypyridine. PubChem CID 28114. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 32-AMINO-3-HYDROXYPYRIDINE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 42-AMINO-3-HYDROXYPYRIDINE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=2-AMINO-3-HYDROXYPYRIDINE