Polyglyceryl-3 Isostearate

AKA: Polyglyceryl-3 Ester, Emulsifier

Plant-Derived

Cleanser

Emulsifier

Plant Oil

Not Clean

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

CAS #

127512-63-4

Functions

Emulsifying

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

Emulsifier

Brightens Skin

Mixes Oil & Water

Traditional Use

A modern synthetic emulsifier created by combining polyglycerin with isostearic acid. Designed to improve product stability and create smooth textures in cosmetic formulations.

EWG

CIR

Safe as used

Pregnancy

Yes

CIR Safety Findings

Not a Sensitizer

medical-approval

all-shades-safe

Regulatory Status

USA✔ permitted

EU⚠ restricted

JAPAN⚠ restricted

CANADA⚠ restricted

Regulatory Agencies

EWG CIR FDA EU COSING Health Canada

Skin Types

●all-skin-types

Best For

General

Pregnancy & Breastfeeding Safe

Yes

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.

Verified Jun 2026

Data: CosIng · EWG · CIR