How we scored it
Whole extract is botanical shell material; extracts = 1.0 by this site's convention.
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
Castanea Crenata Shell Extract is made by extracting the shells (husks) of Japanese chestnuts with water or solvent. No synthetic route exists.
In plain English
An extract made from chestnut shells (the husks of Castanea crenata). Used in skincare to help condition the skin.
CosIng definition: Castanea Crenata Shell Extract is an extract of the shell of the chestnut, Castanea crenata, 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 CRENATA SHELL EXTRACT. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
- 3CASTANEA CRENATA SHELL EXTRACT. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=CASTANEA%20CRENATA%20SHELL%20EXTRACT