How we scored it
IUPAC/formula (C38H74O2, 563 Da) match isostearyl icosenoate (C20 acid), not erucate (C22) as named; either way both acid and isostearyl alcohol are natural oleochemical fatty fragments → 1.0.
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
Isostearyl alcohol from isostearic acid (oleic acid dimerization); acid partner is a C20-C22 fatty acid from rapeseed, mustard or similar oil depending on which name is correct. Both are natural oleochemical feedstocks.
In plain English
An emollient ester made from a branched fatty alcohol and a long-chain fatty acid, both derived from plant oils. It conditions and softens skin in lotions and creams.
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.
- 2ISOSTEARYL ERUCATE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
- 3ISOSTEARYL ERUCATE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=ISOSTEARYL%20ERUCATE