Methyl Ethylcellulose
molecular structure · PubChem
AKA: Ethyl Methyl Cellulose, Cellulose Ether
Synthetic
Occlusive
Not Clean
Cellulose, ethyl methyl ether
CAS #
9004-59-5
Form
Powder
Functions
Binding
Film Forming
Creates a physical seal on skin to lock moisture in and keep irritants out. The "slugging" ingredient — barrier protection.
Viscosity Controlling
Holds Formula Together
Creates Protective Barrier
Controls Viscosity
Anti-Aging Benefits
Antioxidant Protection
Reduces Inflammation
Creates protective layer
Holds ingredients together
Controls product thickness
Traditional Use
A semi-synthetic polymer created in the early-to-mid 20th century. Developed to provide film-forming and thickening properties in cosmetics as a cellulose alternative.
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
The paper trail
🔬Peer-reviewed1 paper →
⚖️Regulatory1 listing →
🛡️Safety-assessed0 reviews
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: CosIng · EWG · CIR