I use it regularly like people use lip balm. I have dry lips. It wouldn't make sense not to use it unless I wanted dry lips. You gotta do what you gotta do.
As you'll come to find, this doesn't seem to be a "curable" condition at present. If you want to wait for a "cure", be my guest. Assuming that there is anything to "cure". It would suck to waste your whole life waiting for something that doesn't even exist in the first place.
Funny you mention oregano oil, because I did try it, along with many other essential oils. Didn't change anything really, except some of them were very good moisturizers and inflammation reducers. Nothing spectacular though.