PEG-150 Pentaerythrityl Tetrastearate
molecular structure · PubChem
AKA: Emulsifier
Plant-Derived
Cleanser
Emulsifier
Clean
2,2-Bis(hydroxymethyl)-1,3-propanediol, ethoxylated, tetraoctadecanoates (150 mol EO average molar ratio)
CAS #
130249-48-8
Functions
Emulsifying
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Emulsifier
Antioxidant Protection
Reduces Inflammation
Mixes Oil & Water
Traditional Use
A synthetic polyethylene glycol-based emollient developed for cosmetics in the late 20th century. Created to provide conditioning properties and improved spreadability in modern skincare products.
EWG
2
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
medical-approval
all-shades-safe
Regulatory Agencies
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing →
🛡️Safety-assessed3 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: CosIng · EWG · CIR