Database/Depilatory/Potassium Thioglycolate
Mostly petroleum · ISO 16128

Is Potassium Thioglycolate natural?

Mostly not. The thioglycolate portion is petrochemical, made via the chloroacetate route; only the potassium counter-ion is natural mineral origin.

INCI namePotassium Thioglycolate
CAS34452-51-2
FormulaC2H3KO2S · 130.21 Da
FunctionDepilatory · Hair Waving Or Straightening
FeedstockThioglycolic acid is made from petrochemical chloroacetic acid,…

How we scored it

Potassium 2-sulfanylacetate: thioglycolate C2H3O2S (91.1 Da, petrochemical, from chloroacetate) + K (39.1 Da, natural mineral) -> 39.1/130.2 = 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

Thioglycolic acid is made from petrochemical chloroacetic acid, then neutralised with potassium hydroxide. Only the potassium fraction of the finished salt is natural.

In plain English

A reducing ingredient used in hair-waving and depilatory products to loosen the hair's internal structure. Its acid portion is petrochemical-derived, while the potassium comes from a natural mineral source.

Natural alternatives with the same function

Structure

2D structure of Potassium Thioglycolate

potassium 2-sulfanylacetate

PubChem CID 23688957 ↗

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. 2Potassium Thioglycolate. PubChem CID 23688957. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3POTASSIUM THIOGLYCOLATE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4POTASSIUM THIOGLYCOLATE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=POTASSIUM%20THIOGLYCOLATE