After/during my first couple of cycles I noticed a good amount of hair loss around the temples and hairline at the forehead. I went on finasteride, took all kinds of precautions. One of which was using minoxidil every night (supposed to be 2 x day, but I'm lazy). I quit using finasteride as I had trouble getting errections as well on it. The only thing I stuck with was the minox. I've cycled about 1/3 to 1/2 the year off and on for 5 years since and haven't lost a significant amount of more hair! I doubt the minox has much to do with it. I just think that I'm still losing hair at a "normal" rate for me basically. I'm 31 and a little bit of thinness at the front, but once my hair is even 1/2" long it isn't noticeable. I know a lot of guys with similar or much much worse hair lines in my age range. Mine actually looks good and gets compliments.
It's just weird that I shed right off and then not so much after that.