Isobutyl/Methoxy PEG-10 Polysilsesquioxane
AKA “Silicone Crosspolymer, Silica Crosspolymer
Ingredient
Ingredient Facts
Isobutyl/methoxy peg-10 polysilsesquioxane
AKA: Silicone Crosspolymer, Silica Crosspolymer
Ingredient · Viscosity Controlling · EWG: 4
Synthetic
Silicone
Not Clean
Isobutyl/Methoxy PEG-10 Polysilsesquioxane is the Methoxy PEG-10 derivative of Isobutyl Polysilsesquioxane.
Form
Powder
See origin →
Functions
Viscosity Controlling
Controls Viscosity
Traditional Use
Modern hybrid silicone-polymer blend developed for cosmetics in the late 20th century. Designed to combine the light feel of silicones with enhanced water-solubility for improved product performance.
Skin Types
all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
EWG
4
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Verified Jun 2026
Data: CosIng · EWG · CIR