Bis-PEG-4 Dimethicone
AKA “Silicone Modifier, Modified Dimethicone”
Emollient
Ingredient Facts
Bis-peg-4 dimethicone
AKA: Silicone Modifier, Modified Dimethicone
Emollient · Emollient · EWG: 4
Synthetic
Emollient
Skin Conditioner
Hair Care
Silicone
Not Clean
Silicones and siloxanes, dimethyl, hydropolyoxyethylene terminated (4 mol EO average molar ratio)
Form
Liquid
See origin →
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
Traditional Use
Developed as a lightweight silicone conditioning agent in mid-to-late 20th century cosmetics, designed to improve product texture without leaving a heavy residue.
Skin Types
●all-skin-types
Best For
Dryness
Pregnancy & Breastfeeding Safe
Yes
EWG
4
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Agencies
Verified Jun 2026
Data: CosIng · EWG · CIR