What it is
Hydrogenated Castor Oil Dimer Dilinoleate is an ester formed by reacting hydrogenated castor oil with dimer dilinoleic acid. It is a thick, oil-soluble material valued for giving body and structure to anhydrous formulas, helping bind pigments and oils, and providing a cushioned emollient feel. It is commonly found in sticks, balms, and color cosmetics.
Safety & warnings
Generally well tolerated as a heavy emollient and structuring agent. As a rich, oily ester it can feel occlusive and may be a consideration for those prone to congestion, though large esters of this type are not strongly associated with comedogenicity. It is plant-derived in origin via castor and fatty-acid feedstocks.
Origin & sourcing
Synthetic ester; made from hydrogenated castor oil combined with dimer dilinoleic acid, a fatty-acid-derived diacid.
Questions everyone asks
What is this ingredient used for?
It is a thick emollient ester that gives structure to sticks and balms and helps bind oils and pigments.
Why is it common in sun sticks?
Its body and binding properties help build a cohesive, cushioned anhydrous stick base.