Why are all of you guys are forgetting that in Follica's protocols the density of the holes was crucial?
Obviously the more holes you make, the more you bleed. I've had sessions with three days of redness and not seen any visible improvement. However, those times I had 10 days of redness, I saw some improvement. (I did it at 1mm depth, shaved head, and only for a temples, 4sqcm areas each. Imagine doing this for the whole hairline and vertex, ouch!) You need to shave your head, otherwise you won't be able to wash off the blood and you'll need to wear a hat for 3 weeks.
My experience is the bleeding should not come from needle depth, but from session length. Follica used 0.8mm, and 1.0mm only to compensate for long hair, so you guys are crazy to use 1.2mm or 1.5mm and probably can't microneedle as long as you could with less depth.