PEG-5 Oleamide
molecular structure · PubChem
AKA: PEG-3 oleamide, 26027-37-2, PEG-3 OLEAMIDE [INCI], POE OLEIC AMIDE, (Z)-N-[2-[2-(2-hydroxyethoxy)ethoxy]ethyl]octadec-9-enamide
Synthetic
Cleanser
Emulsifier
Not Clean
Poly(oxy-1,2-ethanediyl), .alpha.-[2-[(1-oxo-9-octadecenyl)amino]ethyl]-.omega.-hydroxy- (5 mol EO average molar ratio)
Formula
C24H47NO4
Mol. Weight
413.60
CAS #
26027-37-2
Functions
Emulsifying
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Emulsifier
Fights Bacteria
Locks In Moisture
Wound Healing
Mixes Oil & Water
Traditional Use
A modern synthetic derivative of oleic acid (traditionally found in olive oil) combined with polyethylene glycol, developed in the 20th century as an emollient and conditioning agent.
EWG
4
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Concentration Guide
Dermal absorption: 100%. Source: CIR Safety Assessment (CIR Seq 772).
Regulatory Agencies
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing →
🛡️Safety-assessed1 review →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR