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Diisostearyl Fumarate
AKA “Diisostearyl maleate, diisooctadecyl ester, 4-diisooctadecyl ester, RefChem:134095, Bis(16-methylheptadecyl) (Z)-but-2-enedioate, UNII-587Z76E9M5”
Synthetic
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Ingredient Facts
Diisostearyl fumarate
AKA: Diisostearyl maleate, Diisooctadecyl ester, 4-diisooctadecyl ester, RefChem:134095, Bis(16-methylheptadecyl) (Z)-but-2-enedioate, UNII-587Z76E9M5
Synthetic · Skin Conditioning | Emollient · EWG: 4
Synthetic
Emollient
Skin Conditioner
Synthetic
Clean
A lightweight conditioning agent that softens and smooths skin, leaving it feeling supple and hydrated without a heavy residue.
Formula
C40H76O4
Mol. Weight
621.00
CAS #
112385-09-8, 113431-53-1, 680206-25-1
Form
Liquid
Synthetic
Synthetic
Function
Skin Conditioning | Emollient
Benefits
Locks In Moisture
Traditional Use
A synthetic ester created in the late 20th century. Used in cosmetics as an emollient and film-forming agent that provides conditioning and wear-resistance to formulations.
Skin Types
all-skin-types
Best For
Target
Dryness
Melanin-Rich Skin
Suitable
Pregnancy Safe
Yes
EWG Score4
CIR Safety Findings
medical-approval, all-shades-safe, Non-Comedogenic
medical-approval, all-shades-safe, Non-Comedogenic
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Verified Feb 2026
Data: PubChem · CosIng · EWG · CIR