Ma
Magnesium Sulfate
Magnesium Sulfate
A mineral salt (Epsom salt) used in cosmetics mainly to thicken and stabilize water-in-oil emulsions.
What it does
Magnesium sulfate, the same compound as Epsom salt, is used in skincare as a viscosity and stability aid. In water-in-oil creams a small amount of this salt helps lock the emulsion together and control thickness, giving a more stable product. It is a formulation tool rather than a skin active in these products.
Also known as
epsom salt
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