murphyPEG-40 Hydrogenated Castor Oil Triisostearate
AKA: Polyethylene Glycol 40 Hydrogenated Castor Oil Triisostearate
Plant-Derived
Cleanser
Emulsifier
Plant Oil
Not Clean
OriginNative to India. Derived from castor oil seeds (Ricinus communis) native to tropical regions, primarily cultivated in India.
Produced through hydrogenation of castor oil followed by ethoxylation with polyethylene glycol to create an emulsifier.
Castor oil (Ricinus communis), hydrogenated, ethoxylated, triisooctadecanoate (40 mol EO average molar ratio)
Family
Euphorbiaceae (Spurge family)
Plant Part
Seed
CAS #
61788-85-0
Form
Oil
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
Functions
Emulsifying
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Viscosity Controlling
Emulsifier
Controls Viscosity
Antioxidant Protection
Wound Healing
Mixes oil and water
Controls product thickness
The paper trail
🔬Peer-reviewed1 paper →
⚖️Regulatory1 listing →
🛡️Safety-assessed1 review →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
4
CIR
Safe as used
Pregnancy
Yes
Concentration Guide
Leave-onNot reported
Rinse-off0.002–0.003%
0%50%100%
CIR reported use · report published 2014
Regulatory Agencies
Verified Jun 2026
Data: CosIng · EWG · CIR