murphyBis-PEG-8 PEG-8 Dimethicone
molecular structure · PubChem
AKA: Silicone Modifier, Modified Dimethicone
Synthetic
Skin Conditioner
Hair Care
Silicone
Not Clean
OriginDerived from dimethicone, a silicone polymer, combined with polyethylene glycol (PEG) chains. Synthesized through ethoxylation of dimethicone, attaching polyethylene glycol units to the silicone backbone.
Bis-PEG-8 PEG-8 Dimethicone is a derivative of Dimethicone containing alkoxylated side chain with an average of 8 moles of ethylene oxide, and end-blocked with an average of 8 moles of ethylene oxide
CAS #
-
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.
Conditions Hair
Softens and detangles hair
The paper trail
🔬Peer-reviewednone on file
⚖️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 Agencies
Verified Jun 2026
Data: CosIng · EWG · CIR