I have a question about Mandelic acid. I have a client (21y/o) that has a few break outs and blackheads on her cheeks. She was using SA but after a while it became too drying to rest of her skin and her upper lip started to peel. She is taking BC to control hormone issues (maybe PCOS). Would she be a candidate for a 4% mandelic wash? Would it exfoliate but not be too drying? She is the daughter of a friend and she’s also a long distance client.Thanks in advance.