I'm 24.
Pre-treatment my hairline was very weak, it's density had shot down over the course of about 2 years, giving me an NW2.5 with quite thin slow growing hair. I could no longer style it in any hiding manner. I had received comments from friends and family (all knowing that my Dad lost his hair at around the same age now an NW7). Upon inspection I noted that my temples had receded considerably, I had a lot of miniaturised hair, a lot of the hair I did have on my hairline was thin and colourless.
I responded greatly to treatment (likely mostly to the min), after about 6 months of treatment I had regrown many new hairs which were now cosmetically relevant, my thin hairs had thickened up significantly. In fact all my hair thickened somewhat prompting my mother to ask if I had died my hair darker. I then started growing it out more (my hair is curly) and was able to completely hide my now NW2. The only place that didn't improve was the actually balded parts of my temples, but this is now easily hidden.
Since that 6 month mark there certainly hasn't been any major improvement, then again there isn't much to improve on (I think people rarely go from NW2 to NW1). There might have been some improvement although I now grow my hair out and no longer constantly stress over it so I don't know. It certainly hasn't got worse.
5% min twice a day, miss on average one application a week. I started with the foam, then switched to liquid after about 8 months as it was easier when travelling. I used it for 6 months but am now switching back to the foam which is far easier to apply and doesn't make my hair look nearly as bad as the liquid version.
I also use nizoral every 3 days and take zinc supplementation. I've no idea how much each form of treatment is actually responsible for my success so I just continue them all.