Neopentyl Glycol Diisononanoate
molecular structure · PubChem
AKA: NPDIN, Symmollient L 177205, 27841-07-2, 1, 3-Bis(3, 5, 5-trimethylhexanoyloxy)-2, 2-dimethylpropane, 2, 2-Dimethylpropane-1, 3-diol di-3, 5-trimethylhexanoate, 3-Propanediol, Bis(3, 5-trimethylhexanoate), Hexanoic acid, 2-dimethyl-1, 3-propanediyl ester
Synthetic
Emollient
Skin Conditioner
Not Clean
Neopentyl Glycol Diisononanoate is a cosmetic ingredient used as skin conditioning - emollient. Also known as NPDIN. Assessed as safe by the CIR.
Formula
C23H44O4
Mol. Weight
384.60
CAS #
-
Form
Liquid
Functions
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 branched ester created in the mid-20th century for cosmetics as a light, non-greasy emollient that improves spreadability and skin feel in premium formulations.
Skin Types
●all-skin-types
Best For
General
Pregnancy & Breastfeeding Safe
Yes
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.
Verified Jun 2026
Data: PubChem · CosIng · EWG · CIR