hi...this is a common problem to many... u can use ruby's advice and lip balm...dnt just get any cheap one from around the corner shops... bt rather go to the drugstore n ask for a proper one, which suits yr lips.and remember one thing...u should nt use lip balms only when having dry or chapped lips.the use of lip balms should b continous and u should have it handy all the time, in yr pockets.and also,limit ur use of lipsticks, esp the matt types and avoid rubbing the lip baton to and fro on yr lips.... and drink lots of water....
