murphyPEG-12 Dimethicone/PPG-20 Crosspolymer
molecular structure · PubChem
AKA: Silicone Crosspolymer, Emulsifier
Synthetic
Occlusive
Silicone
Not Clean
OriginDerived from dimethicone and polypropylene glycol polymers, both petroleum-based synthetic compounds. Synthesized through crosslinking polymerization of silicone and PPG components under controlled chemical conditions.
PEG-12 Dimethicone/PPG-20 Crosspolymer is a crosslinked polymer of Hydrogen Dimethicone crosslinked with Bis-allyl PPG-20.
Form
Liquid
State
Solid
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
Functions
Film Forming
Creates a physical seal on skin to lock moisture in and keep irritants out. The "slugging" ingredient — barrier protection.
Viscosity Controlling
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
CIR lists it as not reported to be in use.
CIR · report published 2014
Regulatory Agencies
Verified Jun 2026
Data: CosIng · EWG · CIR