PEG-5 Hydrogenated Castor Oil Triisostearate

PEG-5 Hydrogenated Castor Oil Triisostearate 1
AKA: Polyethylene Glycol 5 Hydrogenated Castor Oil Triisostearate
Plant-Derived
Cleanser
Emulsifier
Plant Oil
Not Clean
Castor oil (Ricinus communis), hydrogenated, ethoxylated, triisooctadecanoate (5 mol EO average molar ratio)
Family
Euphorbiaceae (Spurge family)
Plant Part
Seed
CAS #
61788-85-0
Form
Oil
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
Fights Bacteria
Locks In Moisture
Wound Healing
Mixes oil and water
Controls product thickness
Traditional Use
A highly engineered synthetic emulsifier combining PEG, hydrogenated castor oil, and multiple isostearate chains. Developed in recent decades to create stable, luxurious formulations with improved water resistance and sensory properties.
EWG
4
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USA✔ permitted
CANADA✔ permitted
Regulatory Agencies
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing →
🛡️Safety-assessed1 review →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: CosIng · EWG · CIR