Use of chapstick and lotion actually decreases your body's natural production of oil, resulting in even drier skin. This in turn creates the vicious circle of needing even more artificial moisturizers to alleviate the discomfort.
I'm addicted to both, of course. But the lip-chewing thing is a compulsion; I do it if I'm either nervous or concentrating. The best moisturizer EVER, for any body part, including lips:
