Database/Hair Dyeing/HC Red No. 8
100% petroleum · ISO 16128

Is HC Red No. 8 natural?

No. Aminoanthraquinone hair dye built on a petrochemical anthraquinone core with a synthetic aminopropyl side chain; no natural feedstock contributes mass.

INCI nameHC Red No. 8
CAS13556-29-1
FormulaC17H16N2O2 · 280.32 Da
FunctionHair Dyeing
FeedstockHC Red No. 8 is made by amination…

How we scored it

C17H16N2O2 anthraquinone dye; anthraquinone core from petrochemical/coal-tar anthracene, aminopropylamino side chain synthetic. 0/280.32 = 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

HC Red No. 8 is made by amination of anthraquinone, itself derived from petrochemical or coal-tar aromatics. No natural-origin production route exists for this dye.

In plain English

A synthetic red dye that colors hair by binding directly to the hair shaft. It is built from anthraquinone, a petroleum/coal-tar-derived chemical, not from any plant source.

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Structure

2D structure of HC Red No. 8

1-(3-aminopropylamino)anthracene-9,10-dione

PubChem CID 10802699 ↗

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 Red No. 8. PubChem CID 10802699. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3HC RED NO. 8. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4HC RED NO. 8. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=HC%20RED%20NO.%208