PEG/PPG-50/40 Dimethyl Ether

PEG/PPG-50/40 Dimethyl Ether molecular structure
molecular structure · PubChem
AKA: Dimethyl ether copolymer, Silicone humectant
Synthetic
Skin Conditioner
Not Clean
Methyloxirane, polymer with oxirane, dimethyl ether (50 mol EO, 40 mol PO average)
Effective at 2.52%
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
Traditional Use
Synthetic humectant and solvent developed for modern cosmetics. Engineered to provide enhanced hydration and improve the spreadability of skincare formulations.
EWG
4
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not an Irritant
medical-approval
all-shades-safe
Concentration Guide
0.05%
5.0%
0%7%
Reported use
CIR reported use: 1-3 | 0.1-5 | 0.05-2
Regulatory Status
USA✔ permitted
CANADA✔ permitted
Regulatory Agencies
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
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.
Verified Jun 2026
Data: CosIng · EWG · CIR