This treatment is thought to rejuvenate through injections of a patient's own platelet-rich plasma (PRP). To do this, doctors draw a small amount of the patient's blood and place it in a centrifuge to isolate natural growth factors. PRP can spur collagen production and increase blood flow, which results in firmer skin. When injected into specific areas of the face, PRP injections reduce the appearance of wrinkles and result in a vibrant, youthful appearance.