How we scored it
Ascorbate from glucose (natural) + Zn, Na, hydroxide and chloride (mineral): all retained mass is natural origin, 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
Glucose-derived ascorbic acid (Reichstein or fermentation route) is reacted with zinc chloride and sodium hydroxide. No petrochemical reagent leaves mass in the product.
In plain English
A zinc salt of vitamin C made by reacting ascorbic acid with zinc chloride and sodium hydroxide. It is used as an antioxidant and skin conditioner and absorbs some UV light. The vitamin C comes from glucose; zinc and sodium are mineral.
CosIng definition: Zinc Ascorbate Hydroxide is the product obtained by the reaction of Ascorbic Acid and zinc chloride neutralized with sodium hydroxide
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.
- 2ZINC ASCORBATE HYDROXIDE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
- 3ZINC ASCORBATE HYDROXIDE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=ZINC%20ASCORBATE%20HYDROXIDE