Polyglyceryl-6 Isostearate
molecular structure · PubChem
AKA: PG-6 Isostearate
Plant-Derived
Cleanser
Emulsifier
Plant Oil
Not Clean
1,2,3-Propanetriol, homopolymer, isooctadecanoates (1:1) (6 mol glycerol average molar ratio)
Effective at 12.1%
CAS #
126928-07-2
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
Combines polyglycerin with isostearic acid, a modern branched-chain fatty acid designed to provide superior emulsification and skin-feel compared to straight-chain fatty acids.
EWG
4
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Concentration Guide
1.8%
22.4%
0%31%
Reported use
CIR reported use: 1.8-2.4 | 4-22.4
Regulatory Agencies
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: CosIng · EWG · CIR