Propylene Glycol Dicaprylate/Dicaprate Good Humectant Hydration Propylene Glycol Dicaprylate/Dicaprate description Propylene glycol dicaprylate/dicaprate is a gel-textured ingredient used in many lightweight moisturisers. It’s a mix of propylene glycol and capric acid, a fatty acid derived from plants. Related ingredients: Propylene Glycol