It definitely works and 520 needles work best even though that is counter intuitive. I'm getting my entire hairline back right now. It's reversing rapidly.
Do note that I made many posts before about how I stopped and lost my progress but this time progress is much better because I'm doing this twice a day. In the morning I will dermaroll with 192 needle to cover my bases but I will only dermaroll my hairline and crown area lightly 5 times in perpendicular directions. However I night I will dermaroll with 520 needles and I will do it with 3/10 intensity. Basically I will let the weight of the dermaroll sit on my scalp and then apply just a little bit of pressure and start one rep of dermarolling.
For some reason my hairline is responding really freaking fast compared to the hair on the back of my head. Hopefully they catch up. This time I'm taking regular pictures and therefore I will not be giving up because I have already seen thin but long hair on my entire head regrowing in the pics.
I will post at the 8 month mark which will come in September 2018 in my own new thread.
Please note I kept my hair buzzed for the first to months and for a minute or so I massaged the minoxidil into my scalp with index and middle finger on both hands. Not too much to compromise absorption.
My hair recovery situation was also very fast, just like you.
Thanks to the dermaroller I went from NW3 to NW1.5 in 6 months and I'm still recovering
There is no other treatment that is not invasive or hormonal that is so effective in treating frontotemporal baldness
Time will do justice to the dermaroller as an essential therapy for the regrowth of hair, especially combined with Minoxidil and a good antiandrogen