Database/Hair Dyeing/HC Yellow No. 6
100% petroleum · ISO 16128

Is HC Yellow No. 6 natural?

No. Synthetic fluorinated nitroaniline dye; the trifluoromethyl and nitro groups have no natural biosynthetic route.

INCI nameHC Yellow No. 6
CAS104333-00-8
FormulaC10H11F3N2O4 · 280.20 Da
FunctionHair Dyeing
FeedstockManufactured from petrochemical trifluoromethylaniline via nitration and hydroxypropylamination.…

How we scored it

Whole trifluoromethyl-nitroaniline dye molecule; fluorine chemistry is inherently synthetic. 0/280.20=0.00.
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 from petrochemical trifluoromethylaniline via nitration and hydroxypropylamination. No natural route exists for organofluorine dyes.

In plain English

A synthetic dye used in hair coloring products. It contains a petrochemical trifluoromethyl-nitroaniline structure and has no natural origin.

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 HC Yellow No. 6

3-[2-nitro-4-(trifluoromethyl)anilino]propane-1,2-diol

PubChem CID 5463805 ↗

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. 2HC Yellow No. 6. PubChem CID 5463805. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3HC YELLOW NO. 6. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4HC YELLOW NO. 6. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=HC%20YELLOW%20NO.%206