How we scored it
CaSO4 136.1 + hydrate water 18.0 = 154.2, all mineral; the hydration level (1 or 2 H2O) does not change the result. 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
Mined gypsum or alabaster is ground and, if needed, heated to the hemihydrate or monohydrate form. By-product gypsum from phosphoric acid production is a mineral-derived alternative.
In plain English
A white mineral powder, the same material as gypsum plaster and alabaster. In cosmetics it acts as an abrasive, anti-caking or binding agent. It comes from mined gypsum.
CosIng definition: Alabaster
Structure
calcium;sulfate;hydrate
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.
- 2Calcium Sulfate Hydrate. PubChem CID 10130067. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
- 3CALCIUM SULFATE HYDRATE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
- 4CALCIUM SULFATE HYDRATE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=CALCIUM%20SULFATE%20HYDRATE