How often to microneedle?

Would healing has many phases during the first 3-4 days.  Microneedling stimulates the release various platelets, proteins that can activate hair growth, growth factors, stem cells and new vasculature resulting in the formation of new collagen and activation of stem cells which also may produce hair growth along with the healing process. Give is a week to allow this to happen before repeating the microneedling.  No one knows how long this should go on.