Bis-PEG-1 Dimethicone

Bis-PEG-1 Dimethicone 1
Bis-PEG-1 Dimethicone 2
Bis-PEG-1 Dimethicone 3
Bis-PEG-1 Dimethicone 4
AKA: Silicone Modifier, Modified Dimethicone
Synthetic
Cleanser
Skin Conditioner
Hair Care
Silicone
Not Clean
Silicones and siloxanes, dimethyl, hydropolyoxyethylene terminated (1 mol EO average molar ratio)
Form
Liquid
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.
EWG
4
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Skin Types
●all-skin-types
Best For
Dryness
Pregnancy & Breastfeeding Safe
Yes
The paper trail
🔬Peer-reviewed1 paper →
⚖️Regulatory1 listing →
🛡️Safety-assessed1 review →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: CosIng · EWG · CIR