PEG-3 Dimethicone
AKA “Polyethylene Glycol 3 Dimethicone, PEG 3 Dimethicone”
Skin Conditioning
Ingredient Facts
Peg-3 dimethicone
AKA: Polyethylene Glycol 3 Dimethicone, PEG 3 Dimethicone
Skin Conditioning · Hair Conditioning · EWG: 2
Synthetic
Skin Conditioner
Hair Care
Silicone
Clean
Silicones and siloxanes, dimethyl, hydropoly(oxy-1,2-ethanediyl methyl, trimethylsilyl terminated (3 mol EO average molar ratio)
CAS #
67548-78-7
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.
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
A modern synthetic polymer combining polyethylene glycol with silicone, developed in the late 20th century. Designed to provide silky texture and water-resistant conditioning properties in cosmetics.
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
EWG
2
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Agencies
Verified Jun 2026
Data: CosIng · EWG · CIR