I have never really gotten dry lips in my life. I do tend to bite and lick my lips but i have always done that with no problems. However for one week now, i have gradually felt my lips get more dry and more dry. It has been about a week now. I have used vaseline constantly but the minute it comes off, my lips get dry and wrinkly immmediately. What could cause this ? I am 20, 5, 8" and about 145 pounds and female