Yea I started using it about 2 months ago, give or take, And I can't honestly say how much it has helped or not helped. I started it around the time I started noticing the effects of me being off propecia taking effect. I've definitely continued to lose hair that propecia helped me regrow at a pretty significant rate. So I've no idea how much revivogen helps, it's only been two months and it's not a hella strong product, I'll wait till about month 6 to make an educated decision on it.
As on where to get it, I bought mine from amazon. The shampoo and conditioner are good, I'm still getting away with hiding my hairloss pretty well, although it's becoming more of a chore, the solution that you get does not, in my experience last 3 months, and it does stink. I generally put it on at night, but for me I'm basically out of the solution and ordering more, the conditioner and the shampoo are still about half full.