Diisobutyl Glutarate
AKA “Pentanedioic acid, bis(2-methylpropyl) ester, UNII-5DXH8859OE, Glutaric acid, diisobutyl ester, EINECS 275-257-7, 5-bis(2-methylpropyl) ester”
Synthetic
Ingredient Facts
Diisobutyl glutarate
AKA: Pentanedioic acid, Bis(2-methylpropyl) ester, UNII-5DXH8859OE, Glutaric acid, Diisobutyl ester, EINECS 275-257-7, 5-bis(2-methylpropyl) ester
Synthetic · Emollient · EWG: 4
Synthetic
Emollient
Skin Conditioner
Synthetic
Clean
A conditioning agent that helps keep the formula smooth and flexible, ensuring even application and a comfortable feel on skin.
Formula
C13H24O4
Mol. Weight
244.33
CAS #
71195-64-7
Form
Liquid
See origin →
Functions
Plasticiser
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.
Antioxidant
Protects skin from free radical damage caused by UV, pollution, and stress
Adds flexibility
Traditional Use
Modern synthetic ester used as an emollient in cosmetic formulations. Developed to provide lightweight conditioning without interfering with formulation stability.
Skin Types
●all-skin-types
Best For
Dryness
Melanin-Rich Skin
Suitable
Pregnancy & Breastfeeding Safe
Yes
RIFM fragrance ingredient safety assessment, pentanedioic acid, 1,5-dimethyl ester, CAS Registry Number 1119-40-0.
Api AM, Belsito D, Botelho D, Browne D, Bruze M et al.
Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association, 2018
Diisobutyl Glutarate
European Commission
EU Cosmetic Ingredient Database (CosIng)
Glutaric Acid
European Commission
EU Cosmetic Ingredient Database (CosIng)
Riboflavin-responsive lipid-storage myopathy and glutaric aciduria type II of early adult onset.
de Visser M, Scholte HR, Schutgens RB, Bolhuis PA, Luyt-Houwen IE et al.
Neurology, 1986
Verified Feb 2026
Data: PubChem · CosIng · EWG · CIR