chapped lips

How do you get a kid to stop licking his lips? Logan's mouth looks like it's on fire.  He won't stop licking his lips.  I put Vaseline on his mouth every night.  He licks after drinking, eating, and just because.  He has chap stick in his pocket but doesn't use it.  Logan just likes to hold things.  

Logan loves holding and stashing things. He has a spot under his bed where he hides things.  His spot is toward the head of his bed and behind a basket of books.  Every time we're missing something we have learned to check his "spot" before panicking. He also likes small bags or boxes to stash his things (our things) in. He has used a Lightening McQueen soft lunch box, small jewelry box, backpack on wheels and just about every pair of pants with pockets.  The last time he had gum he put it in his pants pocket.  And of course it went through the wash.  Reuben will occasionally do wash and doesn't think to check Logan's pockets.  At least the load was mostly the boys clothes which really aren't worth much.  Oh well...