Diisostearyl Fumarate
AKA “Diisostearyl maleate, 112385-09-8, 2-Butenedioic acid (Z)-, diisooctadecyl ester, 587Z76E9M5, 2-Butenedioic acid (2Z)-, 1, 4-diisooctadecyl ester, RefChem:134095, Bis(16-methylheptadecyl) (Z)-but-2-enedioate, UNII-587Z76E9M5, SCHEMBL490016
Emollient
Ingredient Facts
Diisostearyl fumarate
AKA: Diisostearyl maleate, 112385-09-8, 2-Butenedioic acid (Z)-, Diisooctadecyl ester, 587Z76E9M5, 2-Butenedioic acid (2Z)-, 1, 4-diisooctadecyl ester, RefChem:134095, Bis(16-methylheptadecyl) (Z)-but-2-enedioate, UNII-587Z76E9M5, SCHEMBL490016
Emollient · Emollient · EWG: 1
Plant-Derived
Emollient
Skin Conditioner
Clean
2-Butenedioic acid (2E), bis(16-methylheptadecyl) ester
Formula
C40H76O4
Mol. Weight
621.00
CAS #
112385-09-8, 113431-53-1, 680206-25-1
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.
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 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
Dryness
Pregnancy & Breastfeeding Safe
Yes
EWG
1
CIR
Safe as used
Pregnancy
Yes
CIR Safety Findings
Non-Comedogenic
medical-approval
all-shades-safe
Regulatory Status
USApermitted
EUrestricted
JAPANrestricted
CANADArestricted
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR