Excessive sweating is medically referred to as Hyperhydrosis, treatment of hyperhydrosis uses a muscle relaxer, botulinum toxin (produced by the bacterium clostridium botulinum) a brand name commonly referred to as 'botox'. 'Botox' works by blocking the nerves responsible for activating your sweat glands. Normally, your nervous system activates your sweat glands when your body temperature rises. This is how your body automatically cools itself. In people with hyperhidrosis, however, the nerves that signal the sweat glands are overactive. When you receive Botox injections directly into the area of your body that commonly sweats, your overactive nerves are essentially paralyzed. When your nerves can’t signal your sweat glands, you don’t sweat. However, Botox only prevents sweating in the specific area where it’s injected.