PEG/PPG-50/40 Dimethyl Ether
AKA “Dimethyl ether copolymer, Silicone humectant
Skin Conditioning
Ingredient Facts
Peg/ppg-50/40 dimethyl ether
AKA: Dimethyl ether copolymer, Silicone humectant
Skin Conditioning · Skin Conditioning · EWG: 4
Synthetic
Skin Conditioner
Not Clean
Methyloxirane, polymer with oxirane, dimethyl ether (50 mol EO, 40 mol PO average)
Effective at 2.52%
See origin →
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.
Skin Types
all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
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%
Effective Range
CIR reported use: 1-3 | 0.1-5 | 0.05-2
Regulatory Status
USApermitted
CANADApermitted
Regulatory Agencies
Verified Jun 2026
Data: CosIng · EWG · CIR