PEG-8 Distearate
AKA “Ethane-1, 2-diol;heptadecanoic acid, ethylene glycol;heptadecanoic acid, QYJQHDWGURXGNL-UHFFFAOYSA-N, C19H40O4, Protamate 200-DS(TM), PEG-4 Distearate(TM)”
Synthetic
Ingredient Facts
Peg-8 distearate
AKA: Ethane-1, 2-diol;heptadecanoic acid, Ethylene glycol;heptadecanoic acid, QYJQHDWGURXGNL-UHFFFAOYSA-N, C19H40O4, Protamate 200-DS(TM), PEG-4 Distearate(TM)
Synthetic · Emulsifying · EWG: 4
Plant-Derived Synthetic
Cleanser
Emulsifier
Synthetic
Clean
Helps blend oil and water in the formula to create a smooth, even texture that spreads easily on skin.
Formula
C19H40O4
Mol. Weight
332.50
CAS #
9005-08-7
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.
Viscosity Controlling
Emulsifier
Reduces Inflammation
Locks In Moisture
Fights Bacteria
Mixes Oil & Water
Traditional Use
Developed in the mid-20th century as a synthetic polyethylene glycol ester. Designed to function as an emulsifier and solubilizer 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