Database/Hair Dyeing/2,6-Dimethoxy-3,5-Pyridinediamine HCl
Mostly petroleum · ISO 16128

Is 2,6-Dimethoxy-3,5-Pyridinediamine HCl natural?

Mostly not. Synthetic hair-dye pyridinediamine supplied as its salt. Only the mineral counter-ion counts as natural, as on the site's other hair-dye salts; every carbon is petrochemical.

INCI name2,6-Dimethoxy-3,5-Pyridinediamine HCl
CAS56216-28-5
FormulaC7H13Cl2N3O2 · 242.10 Da
FunctionHair Dyeing
FeedstockPetrochemical aromatic amine or dye base isolated as…

How we scored it

2,6-Dimethoxy-3,5-pyridinediamine dihydrochloride C7H13Cl2N3O2 242.1 Da: 2×HCl 72.9 Da is mineral-derived (natural); the pyridinediamine 169.2 Da is petrochemical → 72.9/242.1 = 0.30.
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

Petrochemical aromatic amine or dye base isolated as its mineral-acid salt.

In plain English

A synthetic hair-dye ingredient built from a lab-made pyridine ring, sold as its hydrochloride salt for stability. It has no plant or natural origin.

CosIng definition: 2,6-Dimethoxy-3,5-Pyridinediamine HCl is the heterocyclic compound that conforms to the formula

Natural alternatives with the same function

Beta Vulgaris Root Powder 100% natural origin

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 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 2,6-Dimethoxy-3,5-Pyridinediamine HCl

2,6-dimethoxypyridine-3,5-diamine;dihydrochloride

PubChem CID 3017019 ↗

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. 22,6-Dimethoxy-3,5-Pyridinediamine HCl. PubChem CID 3017019. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 32,6-DIMETHOXY-3,5-PYRIDINEDIAMINE HCL. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 42,6-DIMETHOXY-3,5-PYRIDINEDIAMINE HCL. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=2%2C6-DIMETHOXY-3%2C5-PYRIDINEDIAMINE%20HCL