Database/Hair Dyeing/HC Red No. 18
100% petroleum · ISO 16128

Is HC Red No. 18 natural?

No. All HC direct hair dyes are synthetic aromatic compounds derived from petrochemical feedstocks.

INCI nameHC Red No. 18
FunctionHair Dyeing
FeedstockHC Red No. 18 belongs to the HC…

How we scored it

No formula supplied; HC-series dyes are synthetic aromatic amine/nitro or anthraquinone compounds with no natural analogue; assumed 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. 18 belongs to the HC class of synthetic direct hair dyes, manufactured from petrochemical aromatic intermediates. No natural-origin route is used for this dye class.

In plain English

A synthetic red dye used in semi-permanent hair colour. Exact structure is unconfirmed here, but this class of dye is always fully synthetic and petroleum-derived.

Natural alternatives with the same function

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. 18. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  3. 3HC RED NO. 18. 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.%2018