Stearyl Glycol

AKA: 1, 2-Octadecanediol, Octadecane-1, 2-diol, 2-Dihydroxyoctadecane, 20294-76-2, 12-Dihydroxyoctadecane, Octadecylene glycol
Plant-Derived
Emollient
Emulsifier
Skin Conditioner
Not Clean
OriginDerived from natural plant oils such as coconut, palm, or soy through hydrogenation and glycol synthesis processes. Produced by esterifying or ethoxylating fatty alcohols obtained from plant oil hydrogenation.
1,2-octadecanediol is a glycol that is octadecane bearing two hydroxy substituents located at positions 1 and 2. It is functionally related to an octadecane.
Formula
C18H38O2
Mol. Weight
286.50
CAS #
20294-76-2
Skin Types
●all-skin-types
Best For
Dehydration
Pregnancy & Breastfeeding Safe
Yes
Functions
Emulsion Stabilising
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.
Emollient
Fills in the tiny cracks between skin cells to make everything feel smooth and soft. The "silky finish" ingredient.
Viscosity Controlling
Locks In Moisture
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.
EWG
4
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not Phototoxic (CIR Panel on the ingredient group)
CIR Panel statement covering this group of ingredients; not tested individually (CIR 576)
Regulatory Agencies
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR
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