Botox is a cosmetic injection that is to reduce the appearance of wrinkles on the face. Botox injections work by paralyzing muscles that cause wrinkles on your face. It helps to remove wrinkles by paralyzing muscles. It is usually for people in their 20s and 30s getting wrinkles from squinting or smiling too much. Botox can be used on other parts of the body, such as the neck, forehead, mouth or jawline.