How we scored it
Botanical extract; every constituent is plant-derived (n = 1). Extraction solvent leaves no mass. 1.0 / 1.0 = 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
The pericarp (outer shell or husk) of sweet chestnut (Castanea sativa), often a by-product of chestnut processing, is extracted with a solvent, then filtered and concentrated. No petrochemical or synthetic route is commercially relevant.
In plain English
An extract of the pericarp, or outer shell, of the sweet chestnut (Castanea sativa). It is listed as a skin-conditioning ingredient. It is made by extracting the shell material with a solvent and concentrating the liquid.
CosIng definition: Castanea Sativa Pericarp Extract is the extract of the pericarp of Chestnut, Castanea sativa, Fagaceae
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.
- 2CASTANEA SATIVA PERICARP EXTRACT. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
- 3CASTANEA SATIVA PERICARP EXTRACT. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=CASTANEA%20SATIVA%20PERICARP%20EXTRACT