Medically, Botox is used to manage hyperhidrosis (overactive sweating) in the armpits, on the hands, and on the feet. Often insurance covers Botox for hyperhidrosis. Botox is a protein that is injected into the skin to prevent muscles from contracting effectively. This helps hyperhidrosis because each sweat gland has its own muscle that contracts to express the sweat onto the skin. If the muscle can't contract as effectively, the patient can't sweat as well. The results are temporary. Typically, this treatment is effective for 3-6 months.