The use of platelet-rich plasma is essential for PRP treatment because platelets contain cytokines and proteins that promote growth, healing, and rejuvenation. When used in cosmetic treatments to correct hair thinning, injected PRP increases hair growth, stops hair loss, and gives ageing hair follicles a boost.
When undergoing PRP therapy, it's not encouraged to use platelet-rich plasma from another source, or person, because of the risk of infection. For this reason, PRP will always be given back to the patient who donated it at the start of the appointment.
As it is not needed for improving growth factors or improving hair density, the rest of the blood products, such as white and red blood cells, will be safely disposed of as medical waste.