Propylene Glycol Stearate Self-Emulsifying

Propylene Glycol Stearate Self-Emulsifying molecular structure
molecular structure · PubChem
AKA: 2-propanediol, Propane-1, 2-Propylene glycol, 2-dihydroxypropane
Plant-Derived
Emulsifier
Skin Conditioner
Plant Oil
Not Clean
Propylene Glycol Stearate Self-Emulsifying is a cosmetic ingredient. Assessed as safe by the CIR.
Effective at 1.0%
Formula
C3H8O2
Mol. Weight
76.09
CAS #
57-55-6
Functions
Emulsifying
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Humectant
Solvent
Viscosity Controlling
Brightening
Anti-Inflammatory
Wound Healing
Traditional Use
Developed in the mid-20th century as a synthetic emulsifier combining propylene glycol with stearic acid. Used in cosmetics since the 1950s to stabilize oil-and-water mixtures and improve product texture.
EWG
4
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Concentration Guide
9.9e-05%
2.0%
0%14%
Reported use
CIR reported use: 0.000099-2
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory0 listings
🛡️Safety-assessed1 review →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
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Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR