murphyDimethicone/PEG-10/15 Crosspolymer
molecular structure · PubChem
AKA: Silicone Crosspolymer, Modified Silicone
Synthetic
Occlusive
Silicone
Clean
OriginDerived from dimethicone (silicone polymer) crosslinked with polyethylene glycol (PEG) compounds as starting materials. Synthesized through crosslinking reactions between dimethicone and PEG-10/15 diallyl ether monomers.
Dimethicone/PEG-10/15 Crosspolymer is a copolymer of dimethicone crosslinked with a mixture of PEG-10 and PEG-15 diallyl ethers
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.
Opacifying
Creates Protective Barrier
Adds Opacity
Creates protective layer
Creates creamy opacity
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing →
🛡️Safety-assessed2 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
2
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Skin Irritant
1 study / 1 not irritating (CIR 619)
Not a Sensitizer
1 study / 1 not sensitizing (CIR 619)
Concentration Guide
Leave-on0.03–3%
Rinse-off0.8%
0%50%100%
CIR reported use · 2012 survey
Regulatory Agencies
Verified Jun 2026
Data: CosIng · EWG · CIR