PEG/PPG-55/28 Dimethyl Ether

PEG/PPG-55/28 Dimethyl Ether molecular structure
molecular structure · PubChem
AKA: Dimethyl ether copolymer, Silicone humectant
Synthetic
Skin Conditioner
Not Clean
OriginDerived from ethylene oxide and propylene oxide, polymers in the polyether chemical family. Synthesized through ring-opening polymerization of these oxiranes, then capped with dimethyl ether groups.
Methyloxirane, polymer with oxirane, dimethyl ether (55 mol EO, 28 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-reviewednone on file
⚖️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
Concentration Guide
Leave-on0.5–5%
Rinse-off0.05–5%
0%50%100%
CIR reported use · report published 2016
Regulatory Status
USA✔ permitted
CANADA✔ permitted
Regulatory Agencies
Verified Jun 2026
Data: CosIng · EWG · CIR