PEG-6 Diisostearate
AKA “Polyethylene Glycol 6 Diisostearate
Surfactant
Ingredient Facts
Peg-6 diisostearate
AKA: Polyethylene Glycol 6 Diisostearate
Surfactant · Emulsifying · EWG: 4
Plant-Derived
Cleanser
Emulsifier
Not Clean
Poly(oxy-1,2-ethanediyl), .alpha.-(1-oxoisooctadecyl)-.omega.-[(1-oxoisooctadecyl)oxy]- (6 mol EO average molar ratio)
Effective at 7.16%
Form
Liquid
See origin →
Functions
Emulsifying
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Surfactant Emulsifying
Moisturizing
Strengthens Barrier
Mixes oil and water
Traditional Use
A synthetic ester emulsifier developed in the 20th century for cosmetic use. Created to provide stable emulsification and improved texture in modern skincare products without a traditional counterpart.
Skin Types
all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
EWG
4
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Concentration Guide
0.02%
14.3%
0%20%
Effective Range
CIR reported use: 0.04-0.08 | 0.02-14.3
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Verified Jun 2026
Data: CosIng · EWG · CIR