Botox lip flip is a cosmetic treatment that involves injecting botulinum toxin, commonly known as Botox, into the muscles around the mouth to create the appearance of fuller lips. The treatment works by relaxing the muscles that pull down the corners of the mouth, which can cause the upper lip to flip upward slightly, creating the illusion of fuller lips. This is a perfect alternative to lip fillers for a more subtle result. This price includes a top up, if required, at the two week review.