Polyglyceryl-3 Triisostearate

AKA: Isostearic Acid Polyglyceryl Ester, Emollient

Plant-Derived

Emollient

Cleanser

Emulsifier

Skin Conditioner

Not Clean

OriginDerived from plant-based oils such as coconut, palm kernel, or soybean oils as starting materials. Produced through esterification of glycerin with isostearic acid to create the polyglyceryl ester.

Isooctadecanoic acid, triester with triglycerol

CAS #

66082-43-7

Skin Types

●all-skin-types

Best For

General

Pregnancy & Breastfeeding Safe

Yes

Functions

Emollient

Fills in the tiny cracks between skin cells to make everything feel smooth and soft. The "silky finish" ingredient.

Emulsifying

Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.

Locks In Moisture

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

CIR

Safe as used

Pregnancy

Yes

Concentration Guide

CIR lists it as not reported to be in use.

CIR · report published 2023

Regulatory Status

USA✔ permitted

EU⚠ restricted

JAPAN⚠ restricted

CANADA⚠ restricted

Regulatory Agencies

EWG CIR FDA EU COSING Health Canada

Verified Jun 2026

Data: CosIng · EWG · CIR