PEG-10 Hydrogenated Castor Oil Isostearate
AKA “PEG-10 hydrogenated castor oil isostearate
Essential Oil
Ingredient Facts
Peg-10 hydrogenated castor oil isostearate
Essential Oil · Emulsifying · EWG: 4
Plant-Derived Synthetic
Cleanser
Emulsifier
Plant Oil
Essential Oil
Clean
Castor oil (Ricinus communis), hydrogenated, ethoxylated, monoisooctadecanoate (10 mol EO average molar ratio) Science: Origin: Botanic/Natural | Process: Catalytic Hydrogenation | Functions: Surfactant - Emulsifying, Viscosity Controlling Safety Ratings: CIR: Safe as used
CAS #
61788-85-0
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.
Viscosity Controlling
Emulsifier
Controls Viscosity
Mixes oil and water
Controls product thickness
Traditional Use
A further-derivatized form of hydrogenated castor oil created by adding PEG and isostearate esters in the 20th century. Engineered as an advanced solubilizer and emollient for complex cosmetic formulations.
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
CANADApermitted
Regulatory Agencies
Verified Feb 2026
Data: CosIng · EWG · CIR