BOTOX® Cosmetic is the most popular cosmetic procedure in the United States. It is safe, quick, effective and produces results with no downtime or surgery and little to no discomfort. BOTOX® Cosmetic is a highly purified protein that is injected into the skin to relax the muscles that cause wrinkles due to repeated facial expressions. It is injected into the muscles in the forehead, the “11 lines” between the eyebrows and the crows feet around the eyes. The onset of action is usually a few days to two weeks after treatment and the duration of action is typically four months.