Glycereth-31

Glycereth-31 molecular structure
molecular structure · PubChem
AKA: 21156-05-8, BLAUNON GL-3, PEG-3 GLYCERYL ETHER, ETHANOL, GLYCERETH-3 [INCI]
Synthetic
Humectant
Cleanser
Skin Conditioner
Clean
OriginDerived from glycerin and ethylene oxide, both petroleum-based or plant-derived synthetic precursors. Synthesized through ethoxylation, where ethylene oxide chains are added to glycerin molecules.
Poly(oxy-1,2-ethanediyl),.alpha.,.alpha.',.alpha.-1,2,3-propanetryiltris[.omega.-hydroxy- (31 mol EO average molar ratio)
Formula
C9H20O6
Mol. Weight
224.25
CAS #
31694-55-0
Form
Powder
Skin Types
●all-skin-types
Best For
Dryness
Pregnancy & Breastfeeding Safe
Yes
Functions
Humectant
A moisture magnet. Pulls water from the air and deeper skin layers up to the surface to keep skin plump and hydrated.
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Cleansing
Makes oil and water mix so dirt, makeup, and sunscreen can actually be washed away. The reason your face wash foams.
Viscosity Controlling
Locks In Moisture
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing →
🛡️Safety-assessed3 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
1
CIR
Safe as used
Pregnancy
Yes
Concentration Guide
CIR lists it as not reported to be in use.
CIR · report published 2025
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR