How we scored it
2x undecylenate C11H19O2 (castor-oil derived, natural) + Zn (mineral, natural) = C22H38O4Zn; all fragments natural. 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
Made by neutralising undecylenic acid, produced by cracking castor-oil-derived ricinoleic acid, with a zinc source. Every carbon in the fatty chain traces to castor oil.
In plain English
The zinc salt of undecylenic acid, a fatty acid derived from castor oil. Used to help control odour-causing microbes and prevent caking in powders.
Structure
zinc bis(undec-10-enoate)
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.
- 2Zinc Undecylenate. PubChem CID 11179. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
- 3ZINC UNDECYLENATE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
- 4ZINC UNDECYLENATE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=ZINC%20UNDECYLENATE