Botox is used to erase crow’s feet, frown lines and other muscle related wrinkles on the face and neck. Botox is injected into the skin and stops the muscles from contracting and creating wrinkles. These results usually last up to six months. At ReNu Cosmetic Laser Center we use a topical numbing cream before Dr. Patel does the injections. The treatment usually takes less than 20 minutes and there you are immediately able to resume normal activity.