murphyBis-PEG-4 Dimethicone
molecular structure · PubChem
AKA: Silicone Modifier, Modified Dimethicone
Synthetic
Emollient
Skin Conditioner
Hair Care
Silicone
Not Clean
OriginDerived from dimethicone, a siloxane polymer, combined with polyethylene glycol chains. Synthesized through condensation reaction linking dimethicone backbone with polyoxyethylene terminating groups.
Silicones and siloxanes, dimethyl, hydropolyoxyethylene terminated (4 mol EO average molar ratio)
Form
Liquid
Skin Types
●all-skin-types
Best For
Dryness
Pregnancy & Breastfeeding Safe
Yes
Functions
Hair Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Emollient
Fills in the tiny cracks between skin cells to make everything feel smooth and soft. The "silky finish" ingredient.
Locks In Moisture
The paper trail
🔬Peer-reviewed1 paper →
⚖️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
Leave-onNot reported
Rinse-off0.4%
0%50%100%
CIR reported use · 2014 survey
Regulatory Agencies
Verified Jun 2026
Data: CosIng · EWG · CIR