Here is a tip, for flaky lips gently brush them with a dry toothbrush for a few seconds and use lip balm to restore moisture. I like fruit tasting lip balm like Japanese brand Lush Lip Service in Cocoa Butter or Korres Lip Butter, excellent moisture and protection against chapped lips.
If you have a bit more time, do a DYI brown sugar lip scrub! It is so easy and most of all cheap. Mix a little bit of olive oil and brown sugar together, rubbing gently and rinsing it out with some lukewarm water. Tap dry with some tissue paper and then apply some lip balm.