PEG-150 Pentaerythrityl Tetrastearate
AKA “PEG-150 Pentaerythrityl Tetrastearate, Emulsifier
Synthetic
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Ingredient Facts
Peg-150 pentaerythrityl tetrastearate
AKA: Emulsifier
Synthetic · Surfactant - Emulsifying | Emollient | Skin Conditioning · EWG: 4
Synthetic
Emollient
Cleanser
Emulsifier
Skin Conditioner
Synthetic
Not Clean
2,2-Bis(hydroxymethyl)-1,3-propanediol, ethoxylated, tetraoctadecanoates (150 mol EO average molar ratio) Science: Origin: Botanic/Natural | Process: Ethoxylation | Functions: Surfactant - Emulsifying Safety Ratings: CIR: Safe as used
CAS #
130249-48-8
Synthetic
Botanical. Derived from stearic acid (a long-chain fatty acid) and pentaerythritol, a synthetic polyol compound. Synthesized through esterification of stearic acid with pentaerythritol, followed by ethoxylation with polyethylene glycol.
Function
Surfactant - Emulsifying | Emollient | Skin Conditioning
Benefits
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.
Skin Types
all-skin-types
Best For
Target
General
Melanin-Rich Skin
Suitable
Pregnancy Safe
Yes
EWG Score4
CIR Safety Findings
medical-approval, all-shades-safe
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Verified Feb 2026
Data: CosIng · EWG · CIR