You need to visit a pharmacy. For feet that are already cracked, purchase Heal Repair Foot Cream.
How cracked are your feet? Just on the surface into the calluses, or is it going into live flesh underneath? Might make a difference in what kind of cream to use, and what footbaths to soothe it. (Open wound or no, you know?) I personally swear by a medically certified pedicurist to keep my feet from falling off. But yeah, keeping it clean and hydrated (cream once or twice a day) would be a good step, but get a doc involved if you feel pain or throbbing, just in case it's infected and you need an antibiotic cream, ureum cream that is stronger than the over-the-counter stuff, or further treatment. Also, if you wear flipflops or something, make sure you switch to something that doesn't "slap" your heel as you walk, because that makes is sooooo much worse. (Really. It makes such a difference...) All in all, don't muck about with it on your own, ask someone for advice who knows how to treat a cracked and possibly open heel.
You do need to get them checked to be on the safe side.
