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Magnesium Carbonate

Reviewed by Kate · Last updated 18 Aug 2026

Inorganic mineral salt used as an absorbent, opacifying agent, colouring agent, or to adjust the pH of cosmetic products.

What Is Magnesium Carbonate?

Inorganic mineral salt used as an absorbent, opacifying agent, coloring agent, or to adjust the pH of cosmetic products.

How widely it's used

0.2%
of skincare products contain this ingredient — placing it in the top 25% of most-used ingredients.
Most common in: Masks Cleansers

Regulatory information

Standardised cosmetic-ingredient identifiers used by regulators.

Show identifiers
INCI Name
MAGNESIUM CARBONATE
INN Name
magnesium carbonate
EC Number
208-915-9
Function
Absorbent, Binding, Bulking, Opa CI Fying

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