Polyglyceryl-5 Isostearate

Plant-Derived

Cleanser

Emulsifier

Not Clean

OriginDerived from isostearic acid (a branched fatty acid) and glycerin, typically sourced from plant oils. Synthesized through esterification of glycerin with isostearic acid, followed by polymerization.

1,2,3-Propanetriol, homopolymer, isooctadecanoates (1:1) (5 mol glycerol average molar ratio)

CAS #

-

Skin Types

●all-skin-types

Best For

General

Pregnancy & Breastfeeding Safe

Yes

Functions

Emulsifying

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

Emulsifier

Mixes Oil & Water

The paper trail

🔬Peer-reviewednone on file

⚖️Regulatory1 listing →

🛡️Safety-assessed2 reviews →

Counts, not a verdict. A listing isn't a study. The trail, you decide.

EWG

CIR

Safe as used

Pregnancy

Yes

Concentration Guide

CIR's newest survey reports no concentration of 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