Diethylhexyl Fumarate
AKA “Bis(2-ethylhexyl) fumarate, Di(2-ethylhexyl) fumarate, 2-Ethylhexyl fumarate, RC Comonomer DOF, EINECS 205-448-2, 2-Butenedioic acid, bis(2-ethylhexyl) ester, FUMARIC ACID”
Synthetic
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Ingredient Facts
Diethylhexyl fumarate
AKA: Bis(2-ethylhexyl) fumarate, Di(2-ethylhexyl) fumarate, 2-Ethylhexyl fumarate, RC Comonomer DOF, EINECS 205-448-2, 2-Butenedioic acid, Bis(2-ethylhexyl) ester, FUMARIC ACID
Synthetic · Skin Conditioning - Emollient | Film Forming · EWG: 4
Plant-Derived
Emollient
Occlusive
Skin Conditioner
Synthetic
Clean
A lightweight conditioning agent that smooths and softens skin, leaving it feeling hydrated and supple without a greasy residue.
Formula
C20H36O4
Mol. Weight
340.50
CAS #
141-02-6, 128111-61-5
Form
Liquid
Plant-Derived
Synthetic. Synthesized from fumaric acid and 2-ethylhexanol, both petroleum-derived chemicals or produced through organic synthesis. Created through esterification reaction, where fumaric acid and the alcohol combine under catalytic conditions to form the ester.
Function
Skin Conditioning - Emollient | Film Forming
Benefits
Locks In Moisture
Traditional Use
Contemporary synthetic ester used in cosmetics as an emollient and skin-conditioning agent. Created to provide improved texture and moisture benefits in skincare formulations.
Skin Types
all-skin-types
Best For
Target
Dryness
Melanin-Rich Skin
Suitable
Pregnancy Safe
Yes
Verified Feb 2026
Data: PubChem · CosIng · EWG · CIR