Polyglyceryl-5 Triisostearate
molecular structure · PubChem
Plant-Derived
Cleanser
Emulsifier
Not Clean
Polyglyceryl-5 Triisostearate is the triester of Isostearic Acid and Polyglycerin-5
CAS #
-
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.
Removes Impurities
Emulsifier
Removes dirt and impurities
Mixes oil and water
Traditional Use
Developed as a sophisticated emulsifier combining polyglycerin with isostearic acid for enhanced conditioning. Created in the late 20th century to provide luxury cosmetic formulations with improved texture and skin benefits.
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
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.
Verified Jun 2026
Data: CosIng · EWG · CIR