Bis-PEG-20 Dimethicone

Bis-PEG-20 Dimethicone molecular structure
molecular structure · PubChem
AKA: Silicone Modifier, Modified Dimethicone
Synthetic
Skin Conditioner
Hair Care
Silicone
Not Clean
OriginDerived from dimethicone and polyethylene glycol (PEG), both petroleum-based synthetic polymers. Synthesized through esterification and polymerization reactions linking dimethicone chains with PEG segments.
Definition: Bis-PEG-20 Dimethicone is the siloxane polymer that conforms generally to the formula:
CAS #
102783-01-7
Form
Liquid
Skin Types
●all-skin-types
Best For
Dryness
Pregnancy & Breastfeeding Safe
Yes
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.
Locks in moisture
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.
EWG
4
CIR
Safe as used
Pregnancy
Yes
Concentration Guide
CIR lists it as not reported to be in use.
CIR · report published 2014
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Verified Jun 2026
Data: CosIng · EWG · CIR