Cosmetic ingredient

MAGNESIUM ALUMINUM SILICATE

Magnesium Aluminum Silicate is a mineral silicate made of silicon, oxygen, magnesium, and aluminum. It is not an oil or a botanical extract: it is a clay-like material used as a fine powder when cosmetic products are prepared.

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CAS number
1327-43-1
EC number
215-478-8
Chemical name
Silicic acid, aluminum magnesium salt

MAGNESIUM ALUMINUM SILICATE: what it is

Magnesium Aluminum Silicate is a mineral silicate made of silicon, oxygen, magnesium, and aluminum. It is not an oil or a botanical extract: it is a clay-like material used as a fine powder when cosmetic products are prepared.

Its name is not another name for plain silica. Magnesium and aluminum distinguish this material from ingredients made only of silicon and oxygen. Cosmetic silicates can come from minerals or be made through industrial processes, and an ingredient list alone does not identify which origin was used in a particular product.

MAGNESIUM ALUMINUM SILICATE: what it does in cosmetics

In creams, gels, and masks, Magnesium Aluminum Silicate helps control viscosity. In everyday terms, it helps the mixture keep body instead of running like a thin liquid. It can also help keep particles more evenly dispersed while a product is made and applied.

In powder products, its absorbent and anticaking roles support a looser, more manageable texture, while its opacifying role makes a mixture less transparent. These are effects on a formula's consistency, appearance, and handling; they are not evidence that the ingredient treats acne, wrinkles, dark spots, or skin disease.

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