I am facing thinning hair by my hairline, ever since I was in my early 20s. Now I am 27 years old, and I have used several techniques to make my hair thick again, but nothing really worked effectively. I have tried propecia for almost 2 years, but didnât quite help me in treating my thinning hair, although it wasnât completely futile, as it did treat hair fall to some extent. One of my friends advised me to switch to rogaine now, as he asserted that it is scientifically proved in regrowing hair. I want to know from some hair expert, if you would recommend rogaine after using propecia. Moreover, would there be any side effects! Please advice.