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Ingredient guide
aluminium stearate
In short
Aluminium Stearate is a fatty acid salt that helps gel the oil phase of a formula and bind pigments. It improves spread, stability, and water resistance in makeup and sunscreens.
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Works for
Texture
Best used
Anytime
What it is
Aluminium salt of stearic acid; acts as a gelling agent in oil-phase formulas and as a pigment-binding agent in long-wear colour cosmetics; also improves water resistance in sunscreen and foundation formulas without excessive heaviness.
Also found as
Related
Where to find it
La Roche-Posay Anthelios Mineral Tinted Sunscreen SPF 50
Shiseido Synchro Skin Self‑Refreshing Foundation
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Common questions
It thickens and stabilises oil-based phases, helping formulas stay smooth and uniform. It also binds pigments for better wear.
Yes, it’s considered safe and widely used to stabilise makeup, sunscreens, and creamy formulas.
Often in long-wear foundations, oil‑rich creams, and sunscreens that aim for better hold and water resistance.
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