Dilinoleic Acid Propanediol Copolymer Average Emollient Hydration Dilinoleic Acid Propanediol Copolymer at a glance Emollient, film-former, and viscosity increasing agent Often used in lip products where it lends a glossy effect + hydrating emollience May also contribute long wear properties in sunscreen products Slightly yellow, pourable, odorless liquid in raw material form Dilinoleic Acid Propanediol Copolymer description Dilinoleic acid/propanediol copolymer’s reported cosmetics functions include emollient, film-former, and viscosity increasing agent (texture enhancer). Top uses of this ingredient fall mostly into the realm of makeup, specifically lip products where it can lend a glossy effect + emollience. It plays well in lipsticks, lip balms and other lip formulations due to its solubility in common-to-lip-product ingredients such as castor oil and esters. Dilinoleic acid/propanediol copolymer is also said to contribute to long wear properties in sunscreen products, due its insolubility in water and alcohol. Officially, the Personal Care Products Council classifies dilinoleic acid/propanediol copolymer as a synthetic ingredient; however, suppliers note it can be vegetable-derived. As a raw material, it is a slightly yellow, pourable, odorless liquid. At the time of this writing, independent research on this ingredient is lacking. Although we could not find a Cosmetic Ingredient Review assessment for dilinoleic acid/propanediol copolymer, there is no suspected reason to be concerned about its safety. Supplier RIPT testing (a type of testing where the ingredient is applied to skin and monitored for irritancy effects) revealed favorable results. Standard usage levels range from 1–5% depending on formulary needs Related ingredients: Propanediol