Aluminum Stearates

ALU

8/10

Concern level

High concern

Aluminum Stearates is a group of aluminum salts of stearic acid, typically consisting of aluminum distearate and aluminum tristearate. In cosmetics it functions mainly as an anticaking agent, emulsion stabilizer, opacifier, skin-conditioning emollient, and viscosity-controlling thickener, especially in oleogels, creams, ointments, powders, and anhydrous systems. It is hydrophobic and helps build structure and improve texture in oil-rich formulations. ([cosmileeurope.eu](https://cosmileeurope.eu/inci/detail/793/aluminum-stearates/))

Pore-clogging

Low

Regulatory

No data

Chemical Properties

Typical Concentration

0.10% - 50.00%

CAS Number: 7047-84-9

Skin Type Compatibility

dry skin6/10

oily skin7/10

sensitive skin8/10

acne prone6/10

mature skin6/10

normal skin8/10

Interactions

incompatible with: No specific problematic skincare interactions are well established; performance is formulation-dependent., May be less suitable in highly aqueous systems because it is primarily used in hydrophobic/oil-based phases.

Risks & Warnings

Generally considered low risk in cosmetics, but powder forms can be an inhalation nuisance, and very high or prolonged exposure data are limited. Some sources note minimal irritation at high test concentrations, and acne-prone users may find richer, waxier formulations less compatible depending on the formula. ([journals.sagepub.com](https://journals.sagepub.com/doi/pdf/10.3109/10915818209013152))

Vegan Cruelty-Free

Found In Products

NIVEA

NIVEA Creme Body, Face and Hand Moisturizing Cream for All Skin Types, Rich Body Moisturizer with Provitamin B5, 13.5 Oz Tin