I'm diffuse all on top. not on the sides or the back of my head. I'm on fincar also. I'm actually suprised I'm already seeing results even if they are small. I did shed a little on the second week but it got better this week. I'm on the 5th week.
hmm it works differently on people. also, I cut my hair with a no guard twice a week so I see all the little vellus hairs and what not. I would wait and see what happens. It wasn't till this week that I notice a little improvement.