Rogaine will regrow hair but will not restore receding hair line. It's mainly used to regrow hair on the crown.
They are expensive, but ebay sell 3 months supply for like $40.
I used it for a month now and I can say there is improvement. I'm not applying it daily though, maybe like once every 2 - 3 day for 1 time a day.
I also notice my desire for sex has decreased. But once I stop using it for several days, my hormone rages and get iron steel boners.
Rumors about man boobs and small dick are most likely false because ingredient in Rogaine has no proven link to your genital parts.