Ingredient guide
Aluminium Stearate
INCI name · 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.
Works forFrom reviewed ingredient data
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.
Evidence receipt
No linked study yet
No verified study is linked to this exact ingredient and route. The guidance below describes conventional use; it is not evidence of efficacy.
Where it sits
It lives in the moisturiser step, sealing in the lighter layers below.
- Cleanse
- Tone
- Serum
- Aluminium Stearate
- SPF
Also found as
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Common questions
What does Aluminium Stearate do in cosmetics?
It thickens and stabilises oil-based phases, helping formulas stay smooth and uniform. It also binds pigments for better wear.
Is Aluminium Stearate safe for skin?
Yes, it’s considered safe and widely used to stabilise makeup, sunscreens, and creamy formulas.
Where is Aluminium Stearate found?
Often in long-wear foundations, oil‑rich creams, and sunscreens that aim for better hold and water resistance.
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