[header] How to prevent sweaty palms [title] Apply antiperspirant to your hands. [step] There are many antiperspirants designed especially for hands and feet. Nonprescription antiperspirants will temporarily block sweat pores, which means less sweat will be produced on your skin. 
Make sure to choose an antiperspirant and not just a deodorant; these are different kinds of products for different uses. [substeps] It may help to include an antiperspirant in your daily body care routine, preventing occasional sweat rather than treating already-sweaty palms.