Bis-PEG-8 Dimethicone
AKA “Silicone Modifier, Modified Dimethicone”
Surfactant
Ingredient Facts
Bis-peg-8 dimethicone
AKA: Silicone Modifier, Modified Dimethicone
Surfactant · Cleansing · EWG: 2
Synthetic
Cleanser
Skin Conditioner
Hair Care
Silicone
Clean
Silicones and siloxanes, dimethyl, hydropolyoxyethylene terminated (8 mol EO average molar ratio)
CAS #
102783-01-7 (generic)
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 copolymer created for cosmetics to provide humectant and conditioning benefits while improving formulation stability and sensory feel in skincare products.
Skin Types
●all-skin-types, gentle
Best For
Dryness
Pregnancy & Breastfeeding Safe
Yes
EWG
2
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
ewg-2
medical-approval
pregnancy-nursing-safe
all-shades-safe
Regulatory Agencies
Verified Jun 2026
Data: CosIng · EWG · CIR