Platysma is a thin muscle that extends from the edge of the jaw down to the collar bone. It wraps around the front of the neck, causing the neck to pull down and can be signs of an aging neck. Coupled with medical grade skin care, botulinum toxin type A injected into areas of the vertical lines of the neck (platysmal bands), can reverse signs of aging by rejuvenating the skin and restoring a youthful appearance.