The Botox lip flip involves injecting 4-6 units of Botox above the upper lip at the center (near the cupid’s bow) and near the corners of the mouth. 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 cost of a lip flip can vary from $28-$84, depending on how many units are needed to correct the appearance of a gummy smile. This is a great non-invasive route for patients with gummy smiles.