Hydroxypropyl Methylcellulose
molecular structure · PubChem
AKA: Hypromellose
Synthetic
Cleanser
Occlusive
Emulsifier
Clean
Cellulose, 2-hydroxypropyl methyl ether
CAS #
9004-65-3
Form
Powder
Functions
Antistatic
Binding
Emulsion Stabilising
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Film Forming
Creates a physical seal on skin to lock moisture in and keep irritants out. The "slugging" ingredient — barrier protection.
Cleansing
Makes oil and water mix so dirt, makeup, and sunscreen can actually be washed away. The reason your face wash foams.
Viscosity Controlling
Reduces Static
Holds Formula Together
Stabilizes Emulsion
Creates Protective Barrier
Reduces Inflammation
Locks In Moisture
Wound Healing
Traditional Use
Cellulose was first chemically modified in the early 20th century; hydroxypropyl methylcellulose was developed as a thickening and film-forming agent. Used in cosmetics as a gel base and stabilizer.
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
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.
Verified Jun 2026
Data: CosIng · EWG · CIR