Going through the same. Lost everything with chemo but grew back most. Then the ai therapy. Started with Anastrazole and some but switched to exemestane because of other side effects and now it’s uncontrollable. Can see scalp through the hair and more daily. Tried minoxidil because it was what dermatologist said to use. (Can’t do Nutrafol - stimulates estrogen). Unfortunately the attitude is usually to be thankful I have hair and just live with current loss.