I was losing tons of hair throughout college and a few years after- always finding lots on my pillow the next morning. I finally met a girl (eventually my wife) who recommended Nioxin to me. After I started using their shampoo, my hair loss slowed by a huge amount. Compared to 20 hairs a night, I was only getting 2 hairs a week lost.

Eventually, I lost enough to shave my head. But had I started using Nioxin earlier in life, I would still have a full head right now.