Polyglyceryl-5 Triisostearate

Plant-Derived

Cleanser

Emulsifier

Not Clean

OriginDerived from isostearic acid and polyglycerol, typically sourced from plant oils or synthetic hydrocarbons. Produced through esterification reaction between polyglycerin-5 and isostearic acid molecules.

Polyglyceryl-5 Triisostearate is the triester of Isostearic Acid and Polyglycerin-5

CAS #

-

Skin Types

●all-skin-types

Best For

General

Pregnancy & Breastfeeding Safe

Yes

Functions

Cleansing

Makes oil and water mix so dirt, makeup, and sunscreen can actually be washed away. The reason your face wash foams.

Emulsifying

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

Removes Impurities

Emulsifier

Removes dirt and impurities

Mixes oil and water

The paper trail

🔬Peer-reviewed1 paper →

⚖️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

Leave-on1–5%

Rinse-offNot reported

0%50%100%

CIR reported use · 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