hi ,,DR... MY PROBLEM IS my nails in my feet they turn yellow,,and ofcourse it was start with just ONE nail, then ,,it transfer to the other one and the other ,,and NOW they are all of them,,the same..i tried the TEA TREE OIL,,but it dose not work..what i hav 2 do,,,what is the good and healthy way 2 treat my nails in my feet......?