Aluminum Stearates
AKA “Aluminum Stearate, Thickening Agent
Synthetic
Ingredient Facts
Aluminum stearates
AKA: Thickening Agent
Synthetic · Emollient · EWG: 4
Plant-Derived Synthetic
Emollient
Emulsifier
Skin Conditioner
Plant Oil
Synthetic
Clean
Aluminum distearate and aluminum tristearate Science: Origin: Botanic/Natural | Functions: Anticaking, Emulsion Stabilising, Opacifying, Skin Conditioning - Emollient, Viscosity Controlling Safety Ratings: CIR: Safe as used
CAS #
-
Form
Wax
See origin →
Functions
Anticaking
Emulsion Stabilising
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Opacifying
Emollient
Fills in the tiny cracks between skin cells to make everything feel smooth and soft. The "silky finish" ingredient.
Viscosity Controlling
Locks In Moisture
Traditional Use
Modern synthetic aluminum salts used since the mid-20th century as thickening and emulsifying agents in cosmetics. Designed to improve texture and stability of creams, lotions, and powders.
Skin Types
all-skin-types
Best For
General
Melanin-Rich Skin
Suitable
Pregnancy & Breastfeeding Safe
Yes
EWG
4
CIR
Safe
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Verified Feb 2026
Data: CosIng · EWG · CIR