A lip flip with Botox is a cosmetic procedure that involves injecting a small amount of Botox into the muscles around the upper lip. The Botox relaxes the muscles, causing the lip to "flip" and giving the appearance of a fuller upper lip without adding volume to the lip. The procedure is different from lip fillers, which are injections directly into the lip, as opposed to above it. The primary effect of the lip flip is to relax the muscles that connect to the upper lip, allowing the lip to relax and curl outward, thereby appearing larger and more defined in shape. The lip flip can also have a wrinkle-reducing effect on the upper lip, smoothing vertical lip lines. The procedure is generally considered low-stakes, as the results will wear off in 3-4 months. The ideal patient for a lip flip is someone who has a hyperactive muscle around their mouth that causes their upper lip to turn in or pull up dramatically when they smile.