wipe stridex pads twice daily to the plantar surfaces of your feet and then apply an antiperspirant to prevent excessive sweating.
excess oils cause friction to the feet when walking, thus creating flaking.
Put acne control (salicylic acid 2%) really heavy on your heals, cover with a heavy cream like vasaline, put on socks and go to bed. Do this for 7 nights and your dry skin will be gone. Pat