How we scored it
Solvent or water extract of corn silk; all extracted plant solutes are 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
Corn silk (the stigmas) is extracted with water or a water/glycol-type solvent to yield a botanical skin-conditioning extract. No alternative synthetic route exists.
In plain English
An extract made from the silky threads inside corn cobs, used in skincare as a conditioning ingredient.
CosIng definition: Zea Mays Silk Extract is an extract of the stigmas of the Corn, Zea mays L., Gramineae
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.
- 2ZEA MAYS SILK EXTRACT. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
- 3ZEA MAYS SILK EXTRACT. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=ZEA%20MAYS%20SILK%20EXTRACT