Vaping tends to dehydrate you and I guess that could contribute to dry skin. Just make sure you're drinking plenty of water. But if you're already drinking water then I'd look real hard at vitamins. Make sure you're eating your veggies and get your vit d checked. I have dry skin and I've started taking vitamin b12, vitamin d and cod liver oil. Yes, cod-liver oil lol. Sunshine in a bottle.

it seems to be helping.