I'm no expert but surely there isn't any kind of "responders" for this? Isn't it just a biological mechanism that would be applicable across the board? There's no medication involved its just a process. I could be wrong , obviously. But skin wounding/healing is the same in everyone, no?
For this to be really effective you have to use Minoxidil too.
And even without minoxidil, you would "respond" different to skin disruption modalities because wound healing is not the same for everyone, you could heal faster or slower and if you are already bald the skin will be less "prone" to grow cosmetically significant amounts of hair.