What to Consider: The skin on hands and feet is similarly thick and dry, so these products are largely interchangeable. Ingredients like peppermint oil and tea-tree oil are often added to foot creams as natural deodorants. They won't hurt hands but will give them a minty scent and sometimes a tingly feeling, and they could hurt your eyes if you rub them. It's fine to use hand cream on your feet; you just won't get any deodorizing effect.
Bottom Line: If you like a product's feel and scent, go ahead and use it on both hands and feet.