BOTOX® Cosmetic is commonly used to reduce or eliminate the appearance of facial wrinkles. It is injected under the skin into areas surrounding the eyes, forehead and mouth to smooth crow's feet, frown and worry lines, and lines on the neck. Made from a purified protein, BOTOX® injections block nerve impulses, weakening muscles to relax wrinkles and give the face a rejuvenated look. BOTOX® may also be useful for excessive sweating.