PEG/PPG-20/29 Dimethicone
AKA “Silicone Glycol Copolymer, Dimethicone Copolyol
Synthetic
Ingredient Facts
Peg/ppg-20/29 dimethicone
AKA: Silicone Glycol Copolymer, Dimethicone Copolyol
Synthetic · Emollient · EWG: 4
Synthetic
Emollient
Cleanser
Emulsifier
Skin Conditioner
Silicone
Synthetic
Clean
Siloxanes and silicones, dimethyl, 3-hydroxypropyl methyl, ethoxylated, propoxylated (20 mol EO, 29 mol PO average molar ratio) Science: Functions: Surfactant - Emulsifying Safety Ratings: CIR: Safe as used
CAS #
-
Form
Liquid
See origin →
Functions
Emulsifying
Forces oil and water to stay mixed instead of separating into layers. The unsung hero holding your lotion together.
Skin Conditioning
A catch-all term for ingredients that improve how skin looks and feels — softer, smoother, more supple. The workhorse behind most moisturizers.
Emollient
Fills in the tiny cracks between skin cells to make everything feel smooth and soft. The "silky finish" ingredient.
Emulsifier
Mixes Oil & Water
Traditional Use
A silicone copolymer created in the late 20th century for cosmetic use. Functions as an emulsifier and conditioning agent to enhance product feel and performance.
Skin Types
all-skin-types
Best For
General
Melanin-Rich Skin
Suitable
Pregnancy & Breastfeeding Safe
Yes
EWG
4
CIR
Safe w/Qualifications
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USApermitted
CANADApermitted
Regulatory Agencies
Verified Feb 2026
Data: CosIng · EWG · CIR