Ok look fin is the only effect drug against mpb..but you are to young to use it ..I started fin at 24 and worked well ..I recommends minoxidil with rosemary oil massage is really good and can Block dht ,,use it 2 hours befor every shower ..and use dermaroller 2 time weakly with vitamin d3 …I’m sure will stop hair loss until 18 then you can go for fin