Summer sandals look pretty, but they expose our feet to the heat and sun that can cause dry heels. If yours are in need of pampering, after eating a slice of watermelon, save the rind to rub the juicy side over your heels for about a minute. Let this sit for about 10 minutes then rinse off and dry. The natural fruit acids in the watermelon will have loosened rough, dry, hardened skin. The juicy flesh floods your heels with moisture.