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Al

Alumina

Alumina

An inorganic mineral powder used to coat pigments, add slip, and adjust a formula's texture.

What it does

Alumina is aluminum oxide, a fine inorganic powder. It is used to coat and disperse pigments and mineral UV filters so they spread evenly, to thicken or add a soft slip, and to improve texture. It is a texture-and-dispersion ingredient rather than a skin active.

Also known as

aluminum oxide

This page is public and indexed on purpose (unlike profiles and drops, which are unlisted) — it’s the citation behind shared ingredient cards, and it should be findable.
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