OraMoist is a unique oral patch that adheres to the roof of the mouth (or any soft tissue in the mouth) and moisturizes the mouth for hours. OraMoist has been specially developed to alleviate parched, dry mouths, moisten the mouth, and improve general oral health. Once the OraMoist patch adheres, it slowly dissolves, releasing ingredients that moisten the mouth. In most cases, the patch fully dissolves in 2-4 hours, but some people report that it lasts overnight.