Dermatology
What Is PRP for Hair Loss?
Last reviewed: May 2026 · Haute MD Editorial Team
PRP (platelet-rich plasma) for hair loss is a non-surgical treatment that uses growth factors from your own blood to stimulate hair follicles and extend the growth phase of the hair cycle. A small amount of blood is drawn, centrifuged to concentrate the platelets, and then injected into the scalp at the level of the hair follicles. PRP is most effective for androgenetic alopecia and alopecia areata.
How does PRP work for hair loss?
Platelets contain growth factors — including PDGF, VEGF, EGF, and IGF-1 — that promote cell proliferation, increase blood supply to follicles, and stimulate stem cells in the hair follicle bulge. The result is prolonged anagen (growth) phase and miniaturization reversal in susceptible follicles.
What results can you expect?
Most patients notice reduced shedding within 1-3 months and improved density and thickness at 4-6 months. PRP maintains existing hair and can stimulate regrowth in thinning areas, but cannot restore hair from completely dormant follicles. Results vary by individual.
How many PRP sessions are needed?
The standard protocol is 3-4 initial monthly sessions followed by maintenance treatments every 3-6 months. PRP is most effective as a long-term maintenance strategy alongside medications such as minoxidil.
Frequently Asked Questions
Is PRP for hair loss painful?
Scalp injections cause temporary discomfort. Most practices apply topical numbing cream before the procedure and use fine-gauge needles to minimize pain. Most patients describe the procedure as tolerable.
How long do PRP hair loss results last?
Results from PRP typically last 12-18 months before maintenance is needed. Without ongoing treatment, the benefits gradually diminish.
Is PRP better than minoxidil for hair loss?
PRP and minoxidil work through different mechanisms and are often combined. Minoxidil is a daily topical treatment; PRP is an in-office procedure every few months. Combination therapy typically produces better results than either alone.
Is PRP covered by insurance for hair loss?
PRP for hair loss is considered cosmetic and is not covered by insurance. Costs vary by provider and location.
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Dermatology · Bryn Mawr, PA
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