My daughter has sweaty feet when she plays sports. Really really sweaty feet. Her sweaty feet then cause her to have blisters. Bad blisters. Then the bad blisters turn into calluses on her feet. We have bought all kinds of sock, feet balm, spray deodorant to decrease the sweating and relieve the pain of her blisters. Her feet are so callused, the other day we were walking on the sidewalk and she asked me to wait. She thought she had something on the bottom of her foot, yes a