hey friend.
I was in the same situation as you. I had a receding hair line and the density of hair was rapidly decreasing. I went as far as consulting with a hair transplant doctor to somehow stop the recession before it happened. I even got a prescription for propecia from my doctor.
but as I started the exercises, it took about 2-4 months to see results, but not only is my hairline back to where it was naturally, the hair density all over increased and my hair is now very 'healthy' looking.
I have noticed it doesn't work for some people, but perhaps they started with a 'failling' mentality and didn't believe in it. I personally did believe in it, and it did work for me.. I still do it for a minute or two everyday... back then I would do around 200 repetitions in the morning, and 200 at night when i went to bed... and i would FEEL the forehead and the skin of the scalp warming up and being rushed with blood. and then i would imagine new hair growing effortlessly.
all the best to you