I don't think you can beat plain cocoa butter for really dried and cracked skin. Mine is from Body Shop but lotions are pretty easy to find. My feet were soooooo cracked and I used my butter with socks all night and after about 4-5 night - soft feel and no cracks!!

It is also great for knuckles and elbows. I really love the pure hard butter best - it softens when you touch it

I use it every time I wash my hands and after showers all over.