PEG-100 Castor Oil
AKA “Polyethylene glycol 100 castor oil”
Essential Oil
Ingredient Facts
Peg-100 castor oil
AKA: Polyethylene glycol 100 castor oil
Essential Oil · Cleansing · EWG: 4
Plant-Derived Synthetic
Cleanser
Emulsifier
Plant Oil
Essential Oil
Not Clean
Derived from castor seeds, this gentle cleanser helps remove makeup and impurities while keeping formulas smooth and blended.
CAS #
61791-12-6
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.
Cleansing Surfactant
Emulsifier
Removes Impurities
Mixes Oil & Water
Traditional Use
A synthetic emulsifier and solubilizer created by polyethylene glycol modification of castor oil, which has been used medicinally for centuries. Developed in the 20th century to make castor oil's traditional emollient and laxative properties more suitable for stable cosmetic formulations.
Skin Types
●all-skin-types
Best For
Dryness
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 Agencies
Verified Feb 2026
Data: CosIng · EWG · CIR