PRP, or Platelet-rich plasma consists of two elements: plasma, or the liquid portion of blood, and platelets, a type of blood cell that plays an important role in healing throughout the body. Platelets are well-known for their clotting abilities, but they also contain growth factors that can trigger cell reproduction and stimulate tissue regeneration or healing in the treated area. Platelet-rich plasma is simply blood that contains more platelets than normal. PRP injections can be effective in treating male pattern baldness, both in preventing hair loss and promoting new hair growth. PRP can also aid in the stimulation of hair growth after hair transplants. Multiple treatments are recommended and are needed to maintain hair growth.