what the post above said def.
but instead of chapstick i'd recommend a healing ointment/lotion (not the scented/ liquidy kinid either, they just irritate sensitive skin). i live at 10,000 feet above sea level in the cold snowy mountains (worst place in the world for your skin) so i've had to really find something to prevent rips from drying/cracking lol!
anyway regular chapstick is more like a temporary fix than a cure for dry lips/hands. in the long run it actually dries them out more. if you use something like currel or err that one that starts with an l or cetaphil, normal non-cosmetic lotions, it'll work so much better.
my absolute fav is aquaphor. it comes in a tube of thick clear gel. it will heal anything i swear! i use it on my hands, heals, lips, you name it. it's too thick for an over all lotion but good on tough spots. and it's not too slimy or greasy to use on lips. i owe my life to this stuff from rips to bleeding hangnails and chapped lips that are a way of life where i live.
hope this helps.