murphyPropylene Glycol Stearate SE
molecular structure · PubChem
AKA: Propylene Glycol Stearate Self-Emulsifying
Plant-Derived
Cleanser
Emulsifier
Clean
OriginDerived from stearic acid (a long-chain fatty acid) and propylene glycol, commonly sourced from petroleum or vegetable oils.
Produced through esterification of stearic acid with propylene glycol, followed by neutralization with a base to form the SE salt.
Octadecanoic acid, reaction products with 1,2,3-propanetriol, neutralized
CAS #
-
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
Functions
Opacifying
Emulsifying
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Adds Opacity
Emulsifier
Brightens Skin
Reduces Inflammation
Wound Healing
Mixes oil and water
Creates creamy opacity
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing →
🛡️Safety-assessed2 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
1
CIR
Safe as used
Pregnancy
Yes
Restricted By
CIR Safety Findings
Not a Sensitizer
2 studies / 2 not sensitizing (CIR 222 and 684)
Mixed Eye Irritation Results
2 studies / 1 irritating / 1 not irritating / reactions minimal (CIR 222 and 684)
Mixed Skin Irritation Results
2 studies / 1 irritating / 1 not irritating / reactions minimal (CIR 222 and 684)
Concentration Guide
Leave-on1%
Rinse-off1.4%
0%50%100%
CIR reported use · 2014 survey
Regulatory Agencies
Verified Jun 2026
Data: CosIng · EWG · CIR