Throughout our lives, we repeatedly make facial expressions that contract our facial muscles, which can result in unwanted lines. Botox is an injectable treatment made up of Botulinum Toxin Type A. It works by blocking nerve signals from reaching the facial muscles that contract and cause lines and wrinkles. Botox can be used to treat wrinkles and lines across the forehead, between the eyebrows and on the bridge of the nose, crow’s feet, muscle bands on the neck, and wrinkles around the mouth.