Magnesium Oxide

Magnesium oxide is an inorganic mineral powder of magnesium and oxygen that appears as a fine, white, inert solid. In cosmetics it adjusts pH, absorbs excess oil for a matte look, and adds opacity or soft-focus to improve finish.
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Ingredient Snapshot

Overview
A mineral powder that mattifies skin and softly blurs texture.
Category
Oil Control, Tone/Texture
Type
pH Adjuster

Ingredient Ratings

Overall Rating

Good

Comedogenic Risk

None

Skin Benefits

Keeps skin looking more matte and can visibly blur the look of pores and uneven texture, offering lightweight oil control without a heavy feel.

Uses In Skincare & Cosmetics

Common in setting powders, mattifying primers, and clay-style masks to curb surface grease and refine makeup's finish.

Comedogenic Rating

This ingredient is not typically evaluated for comedogenicity, and no standardized rating is available.

Safety

Generally low-irritation and chemically inert on skin; overuse in powders may feel drying. Avoid inhaling airborne dust during application. No widely cited regulatory restrictions for typical cosmetic use.

Is Magnesium Oxide a Good Ingredient?

It mattifies reliably and aids pH adjustment with stable, inert performance, which is enough for Good, though it offers minimal direct skin treatment benefit. It controls shine without notable irritation for most users.

Products with Magnesium Oxide

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