Dry vag skin??

So I have dry skin kinda like little dry rings (like when you have a dry skin blister and it peels and your left with the circle outline of skin but dry) anyway do you know what it could be from?? I am sexually actively but I don’t think that has anything to do with it. It’s on like the left on my pubic area where my labia majors start, then also a bit on the side of my labia. Then there’s a little “patch” of it like where my labia majora and minora meet. Anyone have any idea what this could be from??