PRP therapy for hair loss is a non-surgical procedure that triggers the growth of hair from resting, dormant, or miniaturized hair follicles. The process involves drawing the patient’s blood into a 20cc specialized tube, where it then spins in a centrifuge for 5 minutes to separate the platelets and plasma from the other components of the patient’s blood. The plasma is then drawn off and set aside. Gravity allows a dense layer of platelets to collect in the plasma at the bottom of the tube. This platelet rich plasma contains a concentration of platelets that has 3 to 5 times more platelets than unseparated blood.
Next, the platelet poor plasma (PPP) is collected from the top of the tube. If the patient will undergo another procedure that uses platelets, such as microneedling, the practitioner will save the PPP. The clinician will then collect the small amount of platelet rich plasma from the bottom of the tube and inject it back into the patient’s scalp using one of two procedures:
Subdermal: The PRP injection goes into the deeper, subcutaneous fat layer of the scalp; this procedure requires a longer needle but fewer injections
Dermal: The PRP solution is injected into the scalp’s dermal layer, which is not as deep as the subcutaneous layer; this procedure features the use of a shorter needle, but requires a greater number of injections
The practitioner will sometimes follow the plasma injection for hair with microneedling, a procedure that further stimulates collagen production. Collagen provides the protein and amino acids needed to make keratin, which is a natural compound that makes hair strong.