The Regenerative Promise
Platelet-rich plasma (PRP) therapy involves drawing a patient own blood, concentrating the platelets and their growth factors, and injecting the result into the scalp to stimulate dormant follicles. The rationale is biologically plausible — platelets release growth factors that promote tissue repair and may extend the hair growth phase — and the treatment has become a popular adjunct in hair restoration clinics. But plausibility and proof are different things.
What the Trials Show
The evidence for PRP in androgenetic alopecia is moderate and mixed. Several small randomized studies show modest improvements in hair density and thickness compared to placebo, but protocols vary widely — in preparation method, injection frequency, and platelet concentration — making results hard to compare and standardize. The lack of consistent protocols is a genuine limitation, and effect sizes are generally modest rather than transformative. PRP appears most useful as a complement to proven treatments rather than a standalone cure.
Setting Realistic Expectations
Patients considering PRP should understand that it typically requires multiple sessions, ongoing maintenance, and out-of-pocket cost, since it is rarely covered by insurance. It works best in early-stage thinning rather than advanced baldness, and results are gradual. Combined with minoxidil or other treatments, it may enhance outcomes. As with any injectable, sterile technique matters. Facilities can source lab supplies and skin care products through our catalog.
