The only problem with that is your feet are likely to sweat and bits of dead skin are lkely to fall off, changing the water's weight.

The best way to discover if these foot baths work is not by conducting studies, it is my getting sick people to use these baths over a sufficent amount of time and see if positive effects take place.

My mother told me a story of a friend of hers who did quite a few ionic foot baths and now looks better and he says he feels better. Who knows for sure but I generally put a lot of faith in success stories.