How we scored it
Ester of cholesterol (natural, extracted from wool grease/lanolin) and isostearic acid (natural branched oleochemical fatty acid); both fragments natural, esterification loses only water.
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
Cholesteryl Isostearate is made by esterifying cholesterol, commercially extracted from sheep's wool grease (lanolin), with isostearic acid, a branched fatty acid from vegetable oil sources. Both fragments are natural-origin.
In plain English
An emollient wax ester combining cholesterol (extracted from wool grease) with a branched natural fatty acid. It helps condition skin and hair and mimics the skin's own lipids.
Structure
[(3S,8S,9S,10R,13R,14S,17R)-10,13-dimethyl-17-[(2R)-6-methylheptan-2-yl]-2,3,4,7,8,9,11,12,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-3-yl] 16-methylheptadecanoate
References
- 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.
- 2Cholesteryl Isostearate. PubChem CID 72941610. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
- 3CHOLESTERYL ISOSTEARATE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
- 4CHOLESTERYL ISOSTEARATE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=CHOLESTERYL%20ISOSTEARATE