Can you explain hair restoration through stem cell injection therapy?

PRP and acell. Prp and acell, an extra cellular matrix created from pig bladder are being utilized to augment hair transplantation as well as to stimulate growth in patients who are not good candidates for surgical restoration.
Stimulates growth. Use of stem-stromal cells plus platelet concentrates can stimulate both the cells within the hair follicles plus enhance blood suppy to the follicles. Both work to stimulate proliferation of remaining 'node' cells of the follicles. Some start with use of prp injections which seems to improve many follicular activities.