Boil five tea bags in a quart of water for 10 minutes. When the solution cools, soak your hands for 20 to 30 minutes nightly. Tea contains tannic acid, which is also found in commercial products such as Ivy Dry, Zilactol and Zilactin. Tea bags can also be held in the palm for 10-15 minutes daily to reduce perspiring palms.
Rub Alcohol! - Rub alcohol (preferably with 40% solution) on both of your hands. It'll absorb moisture as well as keep your hands clean and cooler.
A dermatologist recommended Drysol. It may make your skin a little itchy for a while but it's worth it.
Carry a small rosin bag in your right hand pocket. They're sold at most sporting goods stores in the tennis aisle. Put your hand in your pocket and grip the rosin bag prior to shaking hands. It will keep your hands drier as the rosin absorbs moisture.
Driclor - Driclor is like a roll on deodorant that you put on at night and wash off in the morning. You can put it on underarms, feet and hands. It's amazing. It itches a bit sometimes, but the results are incredible.
DRY HANDS is very useful for sweaty palms. Check it out at www.dryhands.com
One way to reduce sweaty palms is to reduce your intake of foods rich in iodine. Vegetables to avoid include broccoli, asparagus and white onion. Meats to avoid include beef, liver and turkey.
Drinking sage tea provide an additional home remedy for sweaty palms. Zinc has also shown promise in lessening both perspiration as well as body odor. The best advice with zinc is to avoid long term use as it may interfere with copper absorption.