Polyperfluoroethoxymethoxy Difluoroethyl PEG Diisostearate
AKA “Fluorinated PEG Ester, Perfluorinated Emollient
Skin Conditioning
Ingredient Facts
Polyperfluoroethoxymethoxy difluoroethyl peg diisostearate
AKA: Fluorinated PEG Ester, Perfluorinated Emollient
Skin Conditioning · Skin Conditioning · EWG: 4
Plant-Derived
Skin Conditioner
Not Clean
Diester of isostearic acid and polyperfluoroethoxymethoxy difluoroethyl PEG ether
CAS #
162492-15-1, 88645-29-8
Form
Liquid
See origin →
Functions
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 highly specialized synthetic polymer developed in the late 20th century. Created to provide enhanced spreadability and conditioning in premium cosmetics with minimal residue.
Skin Types
all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
EWG
4
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
medical-approval
all-shades-safe
Potential Sensitizer
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Verified Jun 2026
Data: CosIng · EWG · CIR