Glyceryl Sesquioleate
AKA “Glyceryl sesquioleate, Sesquioleic acid glyceride
Surfactant
Ingredient Facts
Glyceryl sesquioleate
AKA: Sesquioleic acid glyceride
Surfactant · Emollient · EWG: 4
Synthetic
Emollient
Cleanser
Emulsifier
Skin Conditioner
Not Clean
9-Octadecenoic acid (Z)-, ester with 1,2,3-propanetriol (3:2)
CAS #
90605-02-0
Form
Oil
See origin →
Functions
Emollient
Fills in the tiny cracks between skin cells to make everything feel smooth and soft. The "silky finish" ingredient.
Emulsifying
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Locks In Moisture
Traditional Use
A modern synthetic ester created in the 20th century by chemically combining glycerin with oleic acid. Developed for use as an emollient and emulsifier in cosmetic formulations.
Skin Types
all-skin-types
Best For
Dryness
Pregnancy & Breastfeeding Safe
Yes
EWG
4
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Verified Jun 2026
Data: CosIng · EWG · CIR