Bis-PEG-1 Dimethicone
AKA “Silicone Modifier, Modified Dimethicone”
Synthetic
Ingredient Facts
Bis-peg-1 dimethicone
AKA: Silicone Modifier, Modified Dimethicone
Synthetic · Cleansing · EWG: 4
Synthetic
Cleanser
Skin Conditioner
Hair Care
Silicone
Synthetic
Clean
Silicones and siloxanes, dimethyl, hydropolyoxyethylene terminated (1 mol EO average molar ratio) Science: Functions: Hair Conditioning, Plasticiser, Skin Conditioning, Surfactant - Cleansing Safety Ratings: CIR: Safe as used
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.
Plasticiser
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Cleansing
Makes oil and water mix so dirt, makeup, and sunscreen can actually be washed away. The reason your face wash foams.
Locks in moisture
Traditional Use
A silicone-based copolymer developed in the mid-20th century to provide humectant and conditioning properties in modern skincare and cosmetic formulations.
Skin Types
●all-skin-types
Best For
Dryness
Melanin-Rich Skin
Suitable
Pregnancy & Breastfeeding Safe
Yes
EWG
4
CIR
Insufficient
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Agencies
Verified Feb 2026
Data: CosIng · EWG · CIR