How we scored it
Ag2O inorganic mineral compound → 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
Manufactured from silver by oxidation, or refined from silver ore/compounds. As an inorganic mineral compound it is natural origin though not renewable.
In plain English
A simple inorganic silver compound used for its antimicrobial properties. As a mineral compound it counts fully as natural origin under ISO natural-origin rules, even though it isn't renewable.
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.
- 2SILVER OXIDE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
- 3SILVER OXIDE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=SILVER%20OXIDE