How we scored it
Solvent extract of walnut husks and shells: tannins, phenolics, sugars and other plant constituents, all n=1. Extraction solvents leave no mass in the extract. 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
Dominant route is extraction of walnut husks and shells with water, ethanol or glycols, followed by filtration. No synthetic or non-plant route exists for this extract.
In plain English
An extract of the husks and shells of the walnut, made by soaking them in a solvent and filtering the liquid. It is added to skincare products as a skin-conditioning ingredient and comes entirely from the walnut.
CosIng definition: Juglans Regia Shell Extract is an extract of the husks and shells of the Walnut, Juglans regia L., Juglandaceae
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.
- 2JUGLANS REGIA SHELL EXTRACT. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
- 3JUGLANS REGIA SHELL EXTRACT. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=JUGLANS%20REGIA%20SHELL%20EXTRACT