PEG-45 Hydrogenated Castor Oil
AKA “Polyethylene Glycol 45 Hydrogenated Castor Oil”
Carrier Oil
Ingredient Facts
Peg-45 hydrogenated castor oil
AKA: Polyethylene Glycol 45 Hydrogenated Castor Oil
Carrier Oil · Cleansing · EWG: 4
Plant-Derived
Cleanser
Emulsifier
Plant Oil
Not Clean
Castor oil (Ricinus communis), hydrogenated, ethoxylated (45 mol EO average molar ratio)
Effective at 11.51%
Family
Euphorbiaceae (Spurge family)
Plant Part
Seed
CAS #
61788-85-0
Form
Oil
See origin →
Functions
Cleansing
Makes oil and water mix so dirt, makeup, and sunscreen can actually be washed away. The reason your face wash foams.
Emulsifying
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Surfactant Cleansing
Surfactant Emulsifying
Moisturizing
Strengthens Barrier
Lifts away dirt and oil
Mixes oil and water
Traditional Use
A modern derivative of castor oil (used medicinally for thousands of years) combined with PEG technology developed in the 1950s. The hydrogenation and PEGylation improve stability, emulsifying power, and shelf life compared to natural castor oil.
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
EWG
4
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Concentration Guide
0.01%
23.0%
0%32%
Effective Range
CIR reported use: 0.01-23
Regulatory Agencies
Verified Jun 2026
Data: CosIng · EWG · CIR