We all naturally have muscles that pull down vertically on the jaw, chin, and neck. This is called the platysmal muscle which stretches from our collar bones all the way up to our upper jaw. A couple of Botox units slightly weakens this pulldown affect and the elevators become stronger. The results are subtle but can aid in prevention as well. After weakening this muscle with Botox a more defined, tighter, jaw line can be visualized as well as an upturning of the corners of the mouth.