I always have dry lips. In the winter they are awful. I'm applying balm every few minutes and after drinking etc. I cover my lips with it at bedtime. They aren't cracked, but they are dry and I do have a habit of pulling off the hard, dry skin, which clearly doesn't help healing.
I've used Carmex (stick and pots), Nivea, Lypsil, and always wear lipstick , a non drying sort. I've tried experimenting to see if it's the lipsticks (currently using Bobbi Brown Luxe one or their Nourishing one) and makes no difference at all, even using lip balm under them.