I've been vaping for about four months now, with no dry lips.
But I just came back from a vacation to Sequoia National Park and I got dry lips there.
I'm guessing it had to do with 7000 foot elevations and no humidity.
I was using a lot of Chapstick during the last few days and it sucked.
I kept getting Chapstick gunk on my 510 mouthpiece.
I hate it when that happens.