I live in the desert. I try to stay hydrated, but there's only so much you can do, and I spend a LOT of time outside -- camping, hiking, etc. My lips take a beating. I'm pretty good about carrying chap stick with me when I'm camping (being outdoors for an entire weekend just TAKES IT OUT of my lips), and I'm pretty religious about putting lovely lip oil on every night.
Then I bought La La Lips.
I think I've used it three times in the two weeks I've had it. And nothing else. This stuff is MIRACULOUS. I haven't been camping with it yet, but I'll definitely be taking it to summer camp with me in July.