Database/Antioxidant/Cysteamine HCl
Mostly petroleum · ISO 16128

Is Cysteamine HCl natural?

Mostly not. The organic aminothiol is synthetic; the chloride counter-ion is mineral.

INCI nameCysteamine HCl
CAS156-57-0
FormulaC2H8ClNS · 113.61 Da
FunctionAntioxidant · Hair Waving Or Straightening
FeedstockSynthetic cysteamine as its hydrochloride salt.

How we scored it

Cysteamine C2H7NS 77.2 Da (ethanolamine / ethylene-sulfide chemistry, petrochemical) + HCl 36.5 Da; the chloride 35.5 Da counts as natural mineral origin: 35.5/113.6 = 0.31.
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

Synthetic cysteamine as its hydrochloride salt.

In plain English

A hair-straightening and antioxidant ingredient. It is a small molecule made entirely through industrial chemical synthesis, though a related form occurs naturally in the body.

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Structure

2D structure of Cysteamine HCl

2-aminoethanethiol;hydrochloride

PubChem CID 9082 ↗

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. 2Cysteamine HCl. PubChem CID 9082. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
  3. 3CYSTEAMINE HCL. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
  4. 4CYSTEAMINE HCL. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=CYSTEAMINE%20HCL