Polyglyceryl-5 Tristearate

AKA: Diglycerin distearate, DIGLYCERYL DISTEARATE, STEARIC ACID, DIESTER WITH DIGLYCEROL, 63119-59-5, 9009-32-9, Polyglyceryl stearate
Plant-Derived
Cleanser
Emulsifier
Plant Oil
Not Clean
Polyglyceryl-5 Tristearate is the triester of stearic acid and Polyglycerin-5
Formula
C42H82O7
Mol. Weight
699.10
CAS #
9009-32-9
Functions
Emulsifying
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Emulsifier
Mixes Oil & Water
Traditional Use
A modern synthetic emulsifier developed by esterifying polyglycerin with stearic acid, a saturated fatty acid traditionally derived from animal fats or vegetable sources. Designed to provide stable emulsification in skincare formulations.
EWG
4
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Skin Types
all-skin-types
Best For
Dryness
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: PubChem · CosIng · EWG · CIR