X.O.
My husband is a first generation immigrant, but before he came to the US his uncle had lived here for a few years and was doing research at a prestigious university. One day his colleague and mentor told him, "In the US we bathe every day and use anti-perspirant and deodorant." While it was tough for him to hear it in that moment he has often said how thankful he is to his mentor for telling him that. They became best friends. The uncle now has a very high level job where he comes into contact with top-level scientists from all over the world, so this bit of hygiene advice was very helpful for him.