PEG-55 Hydrogenated Castor Oil
AKA “Polyethylene glycol hydrogenated castor oil, PEG-55 HCO”
Essential Oil
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Ingredient Facts
Peg-55 hydrogenated castor oil
AKA: Polyethylene glycol hydrogenated castor oil, PEG-55 HCO
Essential Oil · Surfactant - Cleansing | Surfactant - Emulsifying · EWG: 4
Plant-Derived
Cleanser
Emulsifier
Plant Oil
Essential Oil
Not Clean
Hydrogenated castor oil helps cleanse and blend ingredients together, creating a smooth, unified texture in the formula.
Family
Euphorbiaceae (Spurge family)
Plant Part
Seed
CAS #
61788-85-0
Form
Oil
Plant-Derived
Botanical. Native to India. Derived from castor oil seeds of *Ricinus communis*, a plant native to tropical regions including India. Produced through hydrogenation of castor oil, followed by esterification with polyethylene glycol.
Plant Source
Euphorbiaceae (Spurge family)
Plant Part
Seed
Function
Surfactant - Cleansing | Surfactant - Emulsifying
Benefits
Cleansing Surfactant
Emulsifier
Locks In Moisture
Removes Impurities
Mixes Oil & Water
Traditional Use
A synthetic emulsifier combining polyethylene glycol with hydrogenated castor oil. Developed to combine castor oil's traditional skin-soothing benefits with improved stability and water solubility for contemporary cosmetic products.
Skin Types
all-skin-types
Best For
Target
General
Melanin-Rich Skin
Suitable
Pregnancy Safe
Yes
EWG Score4
CIR Safety Findings
medical-approval, all-shades-safe, Not a Sensitizer
Regulatory Agencies
Verified Feb 2026
Data: CosIng · EWG · CIR