This technique allows the isolation and use of growth factors present in the patient’s own blood to stimulate and enhance tissue regeneration, and the formation of collagen elastin and hyaluronic acid. It is indicated to stop hair loss in patients with moderate loss and to improve areas with low density. A small blood draw from the patient is performed and the plasma fractions are separated by centrifugation. The « platelet rich plasma » is then injected at the capillary level. It is a simple and outpatient treatment.