Hyperhidrosis, or excessive sweating, is a condition that can be annoying and embarrassing. There are different options to treat this condition and one of the most effective is Botox injections. Botox is an injection that prevents the release of chemicals that tell the body to sweat. Before injecting the area with Botox, the practitioner will numb the area with a cream. A series of injections will be placed under the skin in a grid pattern. The area where the Botox is injected will no longer sweat. This treatment can be used in the underarm, forehead, palms of the hand and soles of the feet.