The most amazing thing that I've started to use this year has to be the Drionic device. It stops excessive hand sweating with few side effects. I works by running an electrical current from one aluminum pad to the other using your hand as the circuit. Since your fingers are in a small amount of tap water the minerals in that water get pulled or attracted to the current and go along for the ride through your pores/hands to the other aluminum pad that your palm is pressed against. The minerals are to big to fit where the electrical current is going and they get stuck in the sweat pores!
Now that's not the Science way of explaining it but it's just about what happens. The result is after about a week of doing this for 30 minutes a night you've got much dryer hands. Then after that you can do it every other day or so depending on your personal sweating. For people that don't have overly active sweat glads this device would do nothing more than over dry your hands and have them cracking in a day or two. People with "normal" hands will never understand and who cares if they do. But, if you suffer from sweaty hands and I'm not talking it's hot out side and oh, my hands are sweaty, but real sweaty hands all the time effects my life cause I leave a hand print on everything I touch kinda sweaty hand than get the Drionic. You will be very happy with your investment. Now the tip section of my post. If you want to spend the money to stop your hands from sweating so much but don't want to go to the poor house maintaining it, here's the ticket! The devices come with special batteries that you can only get from Drionic, however you can modify all the parts and even add plugs to the devices so you'll be able to save a ton. Check out this site
Oh yeah, it works on your feet too. I have used it for this and on me it seemed to act faster on my feet, which is not intuitive (foot skin is a lot thicker then hand skin) but yes it does work very well on the feet is you've got extremely sweaty feet as well.
I new it was time for me to do something about this when I was on a flight back home to see the folks and I had my hand on my pants leg as we landed and after I stood up and walked off the plane I had a mark from the sweat on my pant leg. I no that much can be said about the nerves and sweating, but "normal" and way overboard are two very different world to live in when your problem makes you look like an ass. Why suffer when science has come up with something that's safe, fast and easy to use.
Happy dry hands!