For me it is the elevated androgens from PCOS. Only thing to get it better is to get those hormones better!
I'd tried spironolactone in the past, but right now I'm going with d-chiro-inositol and working with my endoc with the rest -- thyroid meds, glucophage, vitamin D, vitamin b12, the inositol (used to be called b8). Giving it time. Not wearing a long hairstyle in the meanwhile.
Started Jan 2014: