Diisodecyl Adipate
AKA “Hexanedioic acid, diisodecyl ester, Adipic acid, Diisodecyl hexanedioate, EINECS 248-299-9, HALLSTAR DIDA, DUB DIDA”
Synthetic
Ingredient Facts
Diisodecyl adipate
AKA: Hexanedioic acid, Diisodecyl ester, Adipic acid, Diisodecyl hexanedioate, EINECS 248-299-9, HALLSTAR DIDA, DUB DIDA
Synthetic · Emollient · EWG: 4
Synthetic
Emollient
Solvent
Skin Conditioner
Synthetic
Clean
A lightweight conditioning agent that helps soften skin and keeps formulas smooth and blendable.
Formula
C26H50O4
Mol. Weight
426.70
CAS #
27178-16-1
Form
Liquid
State
Pellets or Large Crystals; Liquid
See origin →
Functions
Plasticiser
Emollient
Fills in the tiny cracks between skin cells to make everything feel smooth and soft. The "silky finish" ingredient.
Solvent
Dissolves other ingredients so they distribute evenly in the formula. Often the invisible "base" everything else is mixed into.
Locks In Moisture
Traditional Use
Synthetic emollient developed for use in cosmetics as a non-greasy conditioning agent. Created in the 20th century to improve formulation stability compared to plant oils.
Skin Types
●all-skin-types
Best For
Dryness
Melanin-Rich Skin
Suitable
Pregnancy & Breastfeeding Safe
Yes
Final Report on the Safety Assessment of Adipic Acid Dihydrazide
Cosmetic Ingredient Review (CIR) Expert Panel
International Journal of Toxicology
1,4-Butanediol/Succinic Acid/Adipic Acid/HDI Copolymer
European Commission
EU Cosmetic Ingredient Database (CosIng)
Adipic Acid
European Commission
EU Cosmetic Ingredient Database (CosIng)
Adipic Acid/CHDM/MA/Neopentyl Glycol/Trimellitic Anhydride Copolymer
European Commission
EU Cosmetic Ingredient Database (CosIng)
Adipic Acid/Neopentyl Glycol/Trimellitic Anhydride Copolymer
European Commission
EU Cosmetic Ingredient Database (CosIng)
Diisodecyl Adipate
European Commission
EU Cosmetic Ingredient Database (CosIng)
Trimethylpentanediol/Adipic Acid/Glycerin Crosspolymer
European Commission
EU Cosmetic Ingredient Database (CosIng)
Adipic Acid
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Adipic Acid/Neopentyl Glycol/Trimellitic Anhydride Copolymer
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Trimethylpentanediol/Adipic Acid/Glycerin Crosspolymer
Environmental Working Group (EWG)
EWG Skin Deep Cosmetics Database
Toxicity of adipic acid.
Kennedy GL Jr
Drug and chemical toxicology, 2002
Allergic Contact Dermatitis to Trimethylpentanediol/Adipic Acid/Glycerin Crosspolymer in a Lip Balm.
Lockmann A, Schill T, Schubert S, Buhl T
Contact dermatitis, 2026
Verified Feb 2026
Data: PubChem · CosIng · EWG · CIR