Diisononyl Ether
AKA “Isononane, Nikkol dine, Diisononyl ether [INCI], UNII-2M7Z6ZJ74T, RefChem:134051, DTXCID801022673
Synthetic
Ingredient Facts
Diisononyl ether
AKA: Isononane, Nikkol dine, Diisononyl ether [INCI], UNII-2M7Z6ZJ74T, RefChem:134051, DTXCID801022673
Synthetic · Emollient · EWG: 4
Synthetic
Emollient
Skin Conditioner
Synthetic
Clean
Helps skin retain moisture by drawing water into the outer layers, keeping skin hydrated and soft throughout the day.
Formula
C18H38O
Mol. Weight
270.50
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.
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
Synthetic solvent and humectant developed for cosmetic use. Created to improve ingredient solubility and product feel in formulations.
Skin Types
all-skin-types
Best For
General
Melanin-Rich Skin
Suitable
Pregnancy & Breastfeeding Safe
Yes
EWG
4
CIR
Insufficient
Pregnancy
Yes
CIR Safety Findings
Not a Sensitizer
medical-approval
all-shades-safe
Regulatory Status
USAunder review
EUrestricted
JAPANrestricted
CANADArestricted
Verified Feb 2026
Data: PubChem · CosIng · EWG · CIR