Natural veg tanned leather....any special care, or whatnot?

I have a belt and now a watch band that are worn daily. I’m more concerned about the watch band and how it handles sweat at the wrist. Is there something I need to do to prevent it from deteriorating quickly, or anything like that? I love the stuff and watching the aging process. But I’ve never had something with constant contact of skin and oils and sweat.

I’ve googled, of course, but I’d like to hear from y’all more than the Googles.