I swear by medicated Blistex, especially because I am prone to cold sores during the colder months if I don't wear chapstick of SOME kind.
I found a nice chapstick from Whole Paycheck; it's their house brand, cost me only $2, I think. Peppermint. I dig it.
I find gently scrubbing your lips with your toothbrush does wonders to remove dead skin. Applying a layer of shea butter before bed works very well too.