Maybe after selection you'll want soft, gentle feet.
Most guys have problems with feet being too soft resulting in huge blisters. Cracks are nothing compared to the blisters that can make the bottom of your feet feel on fire as they peel away layers of skin...
There are lots of things for sale on the internet...
... perhaps you can get some of this
Magic Cure All 
It's recommended frequently by 9 out of 10 SF Medics.
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On a serious note, the only time I had a problem with cracking skin on my feet was the result of a bad case of athlete's foot. I'll take cracked feet over blisters any day. BTW, good hygiene and clean socks will prevent athlete's foot...and yes, you have to wash your feet with soap.