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PEG-50 Hydrogenated Castor Oil
AKA “Polyethylene Glycol 50 Hydrogenated Castor Oil, Cremophor RH 50”
Carrier Oil
Ingredient Facts
Peg-50 hydrogenated castor oil
AKA: Polyethylene Glycol 50 Hydrogenated Castor Oil, Cremophor RH 50
Carrier Oil · Cleansing · EWG: 2
Plant-Derived
Cleanser
Emulsifier
Plant Oil
Clean
Castor oil (Ricinus communis), hydrogenated, ethoxylated (50 mol EO average molar ratio)
Effective at 20.0%
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.
Cleansing Surfactant
Emulsifier
Removes Impurities
Mixes Oil & Water
Traditional Use
Castor oil has ancient traditional use in Ayurvedic and folk medicine; the hydrogenated PEG-50 version was developed in the 20th century for improved stability and water solubility in contemporary cosmetics.
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
EWG
2
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Concentration Guide
0.002%
40.0%
0%56%
Effective Range
CIR reported use: 0.002-0.003 | 1-40
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
PEG-50 Hydrogenated Castor Oil
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
PEG-50 Hydrogenated Castor Oil Isostearate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
PEG-50 Hydrogenated Castor Oil Laurate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
PEG-50 Hydrogenated Castor Oil Succinate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
PEG-50 Hydrogenated Castor Oil Triisostearate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Potassium PEG-50 Hydrogenated Castor Oil Succinate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
Sodium PEG-50 Hydrogenated Castor Oil Succinate
European Commission
EU Cosmetic Ingredient Database (CosIng)
→
PEG-50 Hydrogenated Castor Oil
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
→
Verified Jun 2026
Data: CosIng · EWG · CIR