PEG-8 Dimethicone
AKA: Dimethicone PEG-8, Polyethylene Glycol 8 Dimethicone
Synthetic
Skin Conditioner
Hair Care
Silicone
Clean
Silicones and siloxanes, dimethyl, hydropoly(oxy-1,2-ethanediyl)methyl, trimethylsilyl terminated (8 mol EO average molar ratio)
CAS #
67674-67-7
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.
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
Traditional Use
Hybrid emulsifier combining silicone technology (developed in the 1950s) with PEG, created in the late 20th century. Designed to provide smoothness, water resistance, and improved texture in skincare and makeup products.
EWG
2
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Agencies
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
The paper trail
🔬Peer-reviewednone on file
⚖️Regulatory1 listing →
🛡️Safety-assessed3 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
Verified Jun 2026
Data: CosIng · EWG · CIR