I'm curious about some great tips for skin barrier management.

I've been like that since I was little
As I get older, I definitely feel the need for skin barrier management products more.
My face is oily, but my legs are very dry, so they crack easily and often feel itchy.
I used to use lotion as a skin barrier care product, but I think I need something a little more systematic and professional.
I'm not sure if I can do it properly if I keep it in check, but I'm curious about the skin barrier management tips of many experienced people.