How we scored it
Basic magnesium carbonate 4MgCO3.Mg(OH)2.5H2O: magnesium, carbonate, hydroxide and water are all mineral natural origin: 1.00.
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
Basic magnesium carbonate is precipitated from magnesium salt solutions (brine, seawater or magnesite-derived) with sodium carbonate, or ground from hydromagnesite ore. Both routes give a mineral-origin product.
In plain English
A white mineral powder (basic magnesium carbonate) used in powders and make-up to absorb oil and moisture, add bulk and slip, and buffer pH. It is mined as hydromagnesite or precipitated from magnesium salts in brine or seawater.
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.
- 2MAGNESIUM CARBONATE HYDROXIDE. CosIng — European Commission cosmetic ingredient database. ec.europa.eu/cosing ↗
- 3MAGNESIUM CARBONATE HYDROXIDE. CosIng u2014 European Commission database for information on cosmetic substances and ingredients. https://ec.europa.eu/growth/tools-databases/cosing/search?search=MAGNESIUM%20CARBONATE%20HYDROXIDE