The use of Botox for hyperhidrosis has become an alternative for reducing excessive sweat production. The procedure is performed using a fine-gauge needle that injects small fractions of liquid containing botulinum toxin type "A" into the areas where sweat gland activity is increased. The botulinum toxin works by decreasing the release of a neurotransmitter called acetylcholine from the neurons that stimulate the sweat glands, thereby reducing excessive sweat production. It is an extremely effective treatment, and results are typically observed about 2 weeks after application.