Normal blood is comprised of red blood cells, white blood cells, and platelets. Platelets contain growth factors that are important for tissue regeneration and collagen production. Platelet—rich plasma is the portion of the blood that is rich in platelets. PRP can be used for skin regeneration: stimulating collagen in the skin, treats fine lines and wrinkles, and evens out skin texture including scars and stretch marks. PRP can also be used for hair regrowth: increasing blood supply to the follicles, increasing hair shaft size, maintaining growth phase of hair, and decreasing hair loss.