PEG-60 Castor Oil Isostearate
AKA: Polyethylene glycol castor oil isostearate
Plant-Derived
Cleanser
Emulsifier
Plant Oil
Not Clean
Castor oil, ethoxylated, isooctadecanoate ester (60 mol EO average molar ratio)
Family
Euphorbiaceae (Spurge family)
Plant Part
Seed
CAS #
61791-12-6
Form
Oil
Functions
Emulsifying
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
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.
EWG
4
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
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-assessed1 review →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: CosIng · EWG · CIR