PEG-60 Castor Oil Isostearate
AKA “Polyethylene glycol castor oil isostearate
Essential Oil
Ingredient Facts
Peg-60 castor oil isostearate
AKA: Polyethylene glycol castor oil isostearate
Essential Oil · Emollient · EWG: 4
Plant-Derived Synthetic
Emollient
Cleanser
Emulsifier
Skin Conditioner
Plant Oil
Essential Oil
Not Clean
Castor oil, ethoxylated, isooctadecanoate ester (60 mol EO average molar ratio) Science: Origin: Botanic/Natural | Process: Ethoxylation | Functions: Surfactant - Emulsifying Safety Ratings: CIR: Safe as used
CAS #
61791-12-6
Form
Oil
See origin →
Functions
Emulsifying
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Emollient
Fills in the tiny cracks between skin cells to make everything feel smooth and soft. The "silky finish" ingredient.
Emulsifier
Mixes Oil & Water
Traditional Use
Modern synthetic derivative combining PEG-modified castor oil with isostearic acid, developed in the latter half of the 20th century. Castor oil has ancient roots in Egyptian and Ayurvedic medicine.
Skin Types
all-skin-types
Best For
General
Melanin-Rich Skin
Suitable
Pregnancy & Breastfeeding Safe
Yes
EWG
4
CIR
Safe
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Verified Feb 2026
Data: CosIng · EWG · CIR