PEG-3 Diisostearate
AKA “EMALEX TEG-DI-IS, RefChem:1094418”
Synthetic
Ingredient Facts
Peg-3 diisostearate
AKA: EMALEX TEG-DI-IS, RefChem:1094418
Synthetic · Emollient · EWG: 4
Plant-Derived Synthetic
Emollient
Cleanser
Emulsifier
Skin Conditioner
Plant Oil
Synthetic
Clean
A gentle emulsifier derived from plant oils that helps blend water and oil-based ingredients together, creating smooth, unified textures in creams and serums.
Formula
C42H82O6
Mol. Weight
683.10
CAS #
68958-56-5
See origin →
Functions
Emulsifying
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Emollient
Fills in the tiny cracks between skin cells to make everything feel smooth and soft. The "silky finish" ingredient.
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Emulsifier
Mixes Oil & Water
Traditional Use
A synthetic polyethylene glycol ester developed in the mid-20th century as a surfactant and emulsifier. Created to provide water solubility to oily compounds and improve product texture in modern cosmetic formulations.
Skin Types
●all-skin-types
Best For
General
Melanin-Rich Skin
Suitable
Pregnancy & Breastfeeding Safe
Yes
EWG
4
CIR
Safe w/Qualifications
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Agencies
Verified Feb 2026
Data: PubChem · CosIng · EWG · CIR