Magnesium Oxide

Ingredient guide

What it is and what it does

About this ingredient: EU CosIng ingredient registry (via Open Beauty Facts taxonomy) ↗

Absorbent

Takes up dispersed or dissolved material, including water or oils.

Buffering

Helps resist changes in a formula's pH.

Opacifying

Makes a product less transparent.

Function definitions: European Commission ingredient function definitions (SCCNFP/0299/00, pages 16 to 20) ↗

Registry functions describe possible formulation roles, not results for a finished product. A dictionary entry is not an approval or a safety assessment.

We have not yet published a checked study for this exact ingredient. This is a gap in our coverage, not a finding that research does not exist or that the ingredient is ineffective.

Ingredient research is not proof that a product containing this ingredient works.

From the Serenfold edit. Linked by the ingredient list, without an efficacy ranking.

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Dermalogica

Daily Microfoliant

Targeted treatments · 19 linked ingredients

Inside the formula

Names and identifiers

INCI name on ingredient lists

MAGNESIUM OXIDE

CAS registry number

1309-48-4

EC number

215-171-9