Botox has been shown to have benefits beyond just reducing wrinkles. Studies have found that Botox can improve mood and self-esteem, and is also used to treat migraine headaches, urinary incontinence, excessive sweating, and cardiac arrhythmias. More recent studies have indicated two additional benefits: that Botox can rejuvenate aging skin by altering collagen and elastin fibers and appearing to have an antioxidant effect, and that early post-operative Botox injections may minimize scarring by reducing muscle tension along scars.