Haha, tell your "friend' that yes boosters I think are necessary. I did the 3, then did a few more, I forget how many and then I did another one after I moved. They hurt quite a bit, and your scalp hurts for a while too and feels tight - especially since like mine, I don't have much fat at all in the scalp. I had lost quite a bit of hair - I would at times cry in the bathroom during residency I had lost so much hair.
I look at my hair now and it's a significant difference. I also bought one of those helmets and took spironolactone. So altogether I have significant more hair, I don't see my scalp like I used to. That was rough for me as a woman.
The procedure itself is easy - Draw blood, separate components, get the needles and syringes ready, and inject away. Some people do microdermabrasions to the scalp, my Dermatologist did not - not sure if that would make a difference. But if I were you and you were interested, I'd buy a centrifuge, learn to do it, and either do it yourself or have a friend or someone medical inject for you - it's not brain surgery.
