Hair started thinning (not genetic) from 2016, when I was 33. Had great hair before (photos). I'm using minoxidil, but not finasteride. Had three PRP sessions, in July 2018, October 2018 and December 2018.. I still don't notice any visible change in my hair density. My questions are: 1) What do you think is the reason for my hair thinning? Is it hormone? 2) Does minoxidil help with hormonal hair loss? 2) Why didn't PRP give visible results?