The easiest way to tackle excessive sweating is with an antiperspirant, which most people already use on a daily basis. Antiperspirants contain aluminum salts. When you roll them onto your skin, antiperspirants form a plug that blocks perspiration. You can buy an antiperspirant over the counter at your local supermarket or drug store, or your doctor can prescribe one for you. Over-the-counter antiperspirants may be less irritating than prescription antiperspirants. Start with an over-the-counter brand, and if that doesn t work, see your dermatologist for a prescription. Many antiperspirants are sold combined with a deodorant, which won t stop you from sweating but will control the odor from your sweat.