Hair PRP rejuvenation treatment at Tone Dermatology. This procedure combines expert injection technique with Platlet Rich Plasma (PRP) to help improve scalp health and stimulate thicker fuller hair. The three-step treatment involves (1) a blood draw, that is then (2) processed, and (3) infused into the scalp via injection. This “liquid gold” contains concentrated growth factors that support the skin. This treatment includes anesthetic gas.