Butylene Glycol Diisononanoate

Butylene Glycol Diisononanoate 1
photograph
AKA: Ester oil, Emollient ester
Synthetic
Emollient
Skin Conditioner
Not Clean
OriginDerived from butylene glycol and branched-chain nonanoic acids, both petroleum-derived or synthesized organic compounds. Produced through esterification reaction between butylene glycol and nonanoic acid.
Butylene Glycol Diisononanoate is the diester of butylene glycol and branched chain nonanoic acids
CAS #
-
Form
Powder
Skin Types
●all-skin-types
Best For
Dryness
Pregnancy & Breastfeeding Safe
Yes
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.
Viscosity Controlling
Locks In Moisture
The paper trail
🔬Peer-reviewed1 paper →
⚖️Regulatory1 listing →
🛡️Safety-assessed2 reviews →
Counts, not a verdict. A listing isn't a study. The trail, you decide.
EWG
4
CIR
Safe as used
Pregnancy
Yes
Concentration Guide
CIR lists it as not reported to be in use.
CIR · report published 2017
Regulatory Status
USA✔ permitted
EU⚠ restricted
JAPAN⚠ restricted
CANADA⚠ restricted
Verified Jun 2026
Data: CosIng · EWG · CIR