Aluminum Isostearates/Stearates

Aluminum Isostearates/Stearates molecular structure
molecular structure · PubChem
AKA: Aluminum Fatty Acid Salts
Plant-Derived
Emulsifier
Not Clean
OriginDerived from isostearic and stearic acids, which are typically sourced from vegetable oils or animal fats. Produced through esterification of these fatty acids with aluminum salts to create aluminum complexes.
Isostearic acid, stearic acid, mixture, aluminum salt
Form
Wax
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
Functions
Anticaking
Emulsion Stabilising
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Opacifying
Viscosity Controlling
Prevents Clumping
Stabilizes Emulsion
Adds Opacity
Controls Viscosity
Keeps product blended
Creates creamy opacity
Controls product thickness
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing →
🛡️Safety-assessed1 review →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
4
CIR
Safe as used
Pregnancy
Yes
Concentration Guide
CIR lists it as not reported to be in use.
CIR · report published 2019
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Verified Jun 2026
Data: CosIng · EWG · CIR