Platelet-rich plasma (PRP) or autologous platelet gel, plasma-rich growth factors, and platelet-concentrated plasma are blood component that is rich in thrombocytes on a small volume of plasma. There were seven primary growth factors that actively secreted by thrombocytes including platelet-derived growth factor, transforming growth factor-β, vascular endothelial growth factor, epidermal growth factor, fibroblast growth factor, connective tissue growth factor, and insulin-like growth factor-1.

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... RP application in cosmetic dermatology includes tissue regeneration, wound healing, repairing scar tissue, skin rejuvenation, and being used in alopecia patients. PRP could accelerate soft-tissue formation in the subdermal, activate fibroblast formation and new collagen deposition, and formation of blood vessels and fat cells. PRP is also considered a potential therapy for accelerating hair growth for alopecia.