I don't have terrible cracked heels but I use cheap-o refined coconut oil. That stuff is like nectar of the gods. Eat it, smear it. It doesn't matter. My husband has terrible callouses from working with his hands. He used c-oil religiously for a week and they were softening and getting back to normal. Highly recommend coconut oil!! (If you're going to eat it, make sure you get pure VIRGIN coconot oil and not the refined stuff...it's not quite as safe to eat).
EDIT:
oops, disregard. Just saw your other post about coconut oil. You already know this.
