Aluminum Stearate

Aluminum stearate is a metallic soap formed from aluminum and stearic acid, typically appearing as a fine, oil-dispersible powder. It thickens oils, stabilizes water-in-oil systems, and suspends pigments in cosmetic formulas.
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Ingredient Snapshot

Overview
A texture agent that thickens oils and helps color spread evenly.
Category
Skin Conditioning
Type
Thickener

Ingredient Ratings

Overall Rating

Good

Comedogenic Risk

None

Skin Benefits

Gives products a smoother, more cushioned feel and helps prevent separation over time. Helps color distribute evenly for a consistent look.

Uses In Skincare & Cosmetics

Common in balms, sticks, cream foundations, and ointments to improve body and uniformity. Also used in oil-based sunscreens and makeup to keep formulas cohesive.

Comedogenic Rating

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

Safety

Generally low irritation at standard concentrations, though a few users may notice mild dryness or sensitivity, especially on compromised skin. Avoid inhaling the dry powder during handling.

Is Aluminum Stearate a Good Ingredient?

A dependable oil-phase thickener and water-in-oil stabilizer that improves suspension and texture in balms and sticks. Rated Good due to consistent performance, formulation stability, and a long track record with generally low irritation in typical use.

Products with Aluminum Stearate

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