Apply salt stick. Topical salt sticks can be purchased at most every drug store. Most people apply them to the arm pits; but it works on hands as well. Dry sol is a non prescription liquid your pharmacist can provide to you. For severe problems a prescription strength solution can be available. In extreme cases Botox injections may help.
Hyperhydrosis. There is a condition (hyperhydrosis) where the sweat glands are overactive. This can be anywhere-hands, feet, armpits, groin. There is a topical medication (drysol) that when applied decreases excessive sweating in these areas. This medication is a prescription-so you will need to see your doctor.
BOTOX SEEMS. To work well for a few months at a time.