PEG/PPG-17/4 Dimethyl Ether

PEG/PPG-17/4 Dimethyl Ether molecular structure
molecular structure · PubChem
AKA: Silicone Glycol Copolymer
Synthetic
Skin Conditioner
Clean
OriginDerived from ethylene oxide and propylene oxide, members of the synthetic polymer chemical family. Synthesized through polymerization of these oxides followed by etherification with methanol.
Methyloxirane, polymer with oxirane, dimethyl ether (17 mol EO, 4 mol PO average)
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
Functions
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Locks in moisture
The paper trail
🔬Peer-reviewed1 paper →
⚖️Regulatory1 listing →
🛡️Safety-assessed2 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
2
CIR
Safe as used
Pregnancy
Yes
Concentration Guide
Leave-on0.1–5%
Rinse-offNot reported
0%50%100%
CIR reported use · report published 2016
Regulatory Status
USA✔ permitted
CANADA✔ permitted
Regulatory Agencies
Verified Jun 2026
Data: CosIng · EWG · CIR