My friends bf had told me that his gf's hands were always sweaty when they held hands or did anything?

even sitting in a class room her hands would get all sweat what can she do to make her hands not so sweaty? i feels sooo bad for her help?My friends bf had told me that his gf's hands were always sweaty when they held hands or did anything?
put a little cornstarch on them and rub them together.
apply some good handcream whenever you're going outdoor
and wear gloves whenever you do any hard work like driving weight training etc.and do not apply soap everytime you wash your hands..