PEG/PPG-18/12 Dimethicone
AKA “Silicone Glycol Copolymer, Dimethicone Copolyol”
Emollient
Ingredient Facts
Peg/ppg-18/12 dimethicone
AKA: Silicone Glycol Copolymer, Dimethicone Copolyol
Emollient · Emollient · EWG: 4
Synthetic
Emollient
Skin Conditioner
Silicone
Not Clean
PEG/PPG-18/12 Dimethicone is the alkoxylated derivative of Dimethicone containing an average of 18 moles of ethylene oxide and 12 moles of propylene oxide
CAS #
-
Form
Liquid
See origin →
Functions
Emollient
Fills in the tiny cracks between skin cells to make everything feel smooth and soft. The "silky finish" ingredient.
Locks In Moisture
Traditional Use
A sophisticated synthetic silicone-based copolymer developed in the late 20th century for premium cosmetics. Engineered as a multifunctional emulsifier and conditioning agent for advanced skincare formulations.
Skin Types
●all-skin-types
Best For
Dryness
Pregnancy & Breastfeeding Safe
Yes
EWG
4
CIR
Safe as used
Pregnancy
Yes
Restricted By
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Agencies
Final Report on the Safety Assessment of Dimethicone Copolyol
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
PEG/PPG-18/12 Dimethicone
European Commission
EU Cosmetic Ingredient Database (CosIng)
Preliminary 1 month stability screening of cosmetic multiple emulsions (W/O/W) prepared using cetyl dimethicone copolyol and Polysorbate 80.
Khan H, Akhtar N, Mahmood T, Jameel A, Mohsin S
International journal of cosmetic science, 2015
Verified Jun 2026
Data: CosIng · EWG · CIR