PEG-45 Hydrogenated Castor Oil
AKA “Polyethylene Glycol 45 Hydrogenated Castor Oil”
Essential Oil
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Ingredient Facts
Peg-45 hydrogenated castor oil
AKA: Polyethylene Glycol 45 Hydrogenated Castor Oil
Essential Oil · Surfactant - Cleansing | Surfactant - Emulsifying · EWG: 4
Plant-Derived
Cleanser
Emulsifier
Plant Oil
Essential Oil
Not Clean
Hydrogenated castor oil that gently cleanses and helps blend ingredients together, keeping formulas smooth and effective.
Family
Euphorbiaceae (Spurge family)
Plant Part
Seed
CAS #
61788-85-0
Form
Oil
Plant-Derived
Botanical. Native to India. Derived from castor oil seeds from the Ricinus communis plant (Euphorbiaceae family), primarily grown in India. Produced through hydrogenation of castor oil, then polymerized with polyethylene glycol (PEG-45).
Plant Source
Euphorbiaceae (Spurge family)
Plant Part
Seed
Function
Surfactant - Cleansing | Surfactant - Emulsifying
Benefits
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
Target
General
Melanin-Rich Skin
Suitable
Pregnancy Safe
Yes
EWG Score4
CIR Safety Findings
medical-approval, all-shades-safe, Not a Sensitizer
Concentration Guide
Industry Max
Industry typically uses up to 23.0% in leave-on products (34 products reported). Source: CIR Safety Assessment (CIR Seq 622).
Regulatory Agencies
Verified Feb 2026
Data: CosIng · EWG · CIR