According to one older 2010 study, using Botox on the depressor anguli oris can help elevate the corners of the mouth and even create a temporary neck lift. However, there is insufficient research ...

Results indicated an increase in mean paretic-side commissure displacement from 27.45 mm at 21.65 degrees above the horizontal plane to 29.35 mm at 23.58 degrees after depressor anguli oris ...