PRP is the reapplication of a small amount of blood taken from the person himself/herself, centrifuged with special kits, into platelets and then the healing and growth factors in the platelets are reapplied to the person. The main task of platelets is to stop bleeding and initiate healing when vascular integrity is compromised. Platelets contain many growth factors and cytokines. Due to these properties, platelets enable wounds to heal. The fibrin networks formed in the skin after the application collect the stem cells in the environment into its structure and indirectly work with stem cells. Therefore, when PRP treatment rich in platelet cells is performed on the skin and scalp, the repair and regeneration process in the skin and hair is triggered thanks to the endothelial growth factor, vascular endothelial growth factor, platelet derived growth factor, fibroblast growth factors.