I used Rogaine for a 18 months and still am not certain if it helped me.
My crown has lost a significant amount of hair, when I wasn't really balding there previously. And my hairline took a serious beating
However, the worst were the side affects elsewhere. I experienced constant low blood pressure and felt very dizzy after applying it to my scalp and temples.In addition I got pronounced crows feet around my eyes and my face became puffy. I felt utterly crap and struggled to function.
It annoys me that others seem to get good results but for me the stuff is poison. I will never touch it again.
Just a warning