Over the years I tested many lip balms in order to find THE ultimate one and I can safely say I found it. It's the intensive care lip balm from bebe:
This lip balm is truly the best ever. It heals cracked lips, moisturises dry lips and is just an allround talent. It's a simple white stick and has no scent.
I use it every night before I go to sleep to keep my lips in perfect shape. I can really really really really recommend it and for about 2€ it's a bargain as well.