Underarm sweat can be frustrating and unsightly, but knowing how to control the situation will keep you dry and confident. Deodorants only mask the sweat odor, so if you are serious about stopping sweating, you will need to take active measures to address the glands in your underarm area. Learn to use topical anti-perspirants correctly, as well as lifestyle changes that can affect underarm sweat, and more vigorous medical options available.,