PEG-8 PEG-4 Dimethicone
AKA “Polyethylene Glycol 8 Polyethylene Glycol 4 Dimethicone”
Surfactant
Ingredient Facts
Peg-8 peg-4 dimethicone
AKA: Polyethylene Glycol 8 Polyethylene Glycol 4 Dimethicone
Surfactant · Cleansing · EWG: 4
Synthetic
Cleanser
Emulsifier
Skin Conditioner
Hair Care
Silicone
Not Clean
PEG-8 PEG-4 Dimethicone is the reaction product of Hydrogen Dimethicone and allyl PEG-8 and allyl PEG-4.
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.
Cleansing
Makes oil and water mix so dirt, makeup, and sunscreen can actually be washed away. The reason your face wash foams.
Emulsifying
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Conditions Hair
Cleansing Surfactant
Emulsifier
Reduces Inflammation
Locks In Moisture
Fights Bacteria
Lifts away dirt and oil
Softens and detangles hair
Mixes oil and water
Traditional Use
A modern synthetic emulsifier combining polyethylene glycol with silicone polymers, developed in the late 20th century for use in premium skincare and cosmetic formulations.
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
EWG
4
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