murphyDimethicone/Bis-Isobutyl PPG-20 Crosspolymer
molecular structure · PubChem
AKA: Silicone Crosspolymer
Synthetic
Emollient
Skin Conditioner
Silicone
Clean
OriginDerived from silicone polymers and polyglycerin compounds, synthesized from petrochemical precursors. Produced through crosslinking polymerization reactions between dimethicone and isopropyl alcohol-derived polyol components.
Dimethicone/Bis-Isobutyl PPG-20 Crosspolymer is a crosslinked polymer of Hydrogen Dimethicone crosslinked with bis-methallyl PPG-20
CAS #
-
Form
Liquid
State
Solid
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
Functions
Emollient
Fills in the tiny cracks between skin cells to make everything feel smooth and soft. The "silky finish" ingredient.
Viscosity Controlling
Locks In Moisture
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
Restricted By
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-on0.01–2%
Rinse-offNot reported
0%50%100%
CIR reported use · 2012 survey
Regulatory Agencies
Verified Jun 2026
Data: CosIng · EWG · CIR