Spironolactone
"I'm a 31-year-old woman with PCOS, and I've dealt with acne and excessive facial hair growth for years. I've been on metformin for around 2 years now, which was supposed to help my PCOS symptoms (in addition to being borderline diabetic), but I never really saw any results until my doctor put me on spironolactone in January 2017. Since then I've been taking a very low dose, only 50mg once a day, but it has done wonders for the hair growth! Though I would advise others to wax your facial hair rather than shaving it. When the hair is removed from the follicles, the spiro stunts its regrowth. For me, if I wax it once a week, when it does regrow it comes back barely half as thick as it used to and it's nowhere near as noticeable."