Masseter Botox is a cosmetic procedure that involves injecting Botulinum Toxin Type A (Botox, Dysport, Xeomin, Juveau) into the masseter muscles located at the angle of the jaw. This treatment ultimately results in the relaxation of overactive jaw muscles, which can provide relief from the painful and uncomfortable symptoms of Bruxism, a condition that causes involuntary teeth clenching, jaw tension, and headaches. Masseter Botox can also be effective in resolving pain and tenderness in temporomandibular disorders (TMDs), which usually lead to jaw pain, facial pain, and discomfort. In addition to its therapeutic benefits, Masseter Botox has unexpected cosmetic benefits, which makes it a sought-after treatment to change the shape of one’s face. By injecting doses ranging from 20 to 150 units of Botox into the masseter muscles, patients have recorded significantly decreased pain with improved function and mouth opening. The treatment is minimally invasive, meaning there is minimal discomfort, and the injections are well tolerated by patients.