How we scored it
Inorganic compound of two elements, selenium and sulfur; both mineral-origin, no organic/petrochemical carbon skeleton.
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
Made by directly combining refined elemental selenium (a byproduct of copper ore refining) with sulfur (mined or recovered from gas desulfurization). An inorganic mineral compound throughout.
In plain English
An anti-dandruff active made by combining two mined and refined elements, selenium and sulfur. Reduces the yeast and skin-cell turnover linked to scalp flaking.
Structure
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.
- 2Selenium Sulfide. PubChem CID 24011. National Center for Biotechnology Information. pubchem.ncbi.nlm.nih.gov ↗
- 3SELENIUM SULFIDE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
- 4Selenium sulfide. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=Selenium%20sulfide