Androgenic alopecia — the most common form of progressive hair loss — affects up to 80% of white men and 40% of women over the course of their lives, yet FDA-approved drug therapies remain limited to two options: minoxidil and finasteride. A randomized, placebo-controlled trial published by the National Institutes of Health found that PRP scalp injections produced a mean increase of 33.6 hairs in the target area and a mean increase in total hair density of 45.9 hairs per square centimeter compared to baseline — with no side effects noted during treatment (National Institutes of Health). The mechanism driving those results is not cosmetic chemistry. It is the biology of the hair follicle responding to its own growth signals, amplified and delivered directly.
Why PRP Works Differently Than Topical Hair Loss Treatments
Most people are familiar with topical and oral hair loss treatments — minoxidil foam or solution applied to the scalp, finasteride taken daily as a tablet. These work through systemic or surface-level mechanisms: minoxidil is thought to extend the hair follicle’s active growth phase and improve follicular blood supply; finasteride blocks the conversion of testosterone to dihydrotestosterone (DHT), the androgen primarily responsible for follicle miniaturization in androgenic alopecia.
PRP works through a different pathway entirely. Platelet-rich plasma is derived from a small blood draw processed to concentrate the platelet layer — the fraction of blood packed with growth factors including platelet-derived growth factor (PDGF), vascular endothelial growth factor (VEGF), epidermal growth factor (EGF), and insulin-like growth factor 1 (IGF-1). Each of these has a documented role in hair follicle biology: promoting stem cell renewal, stimulating the anagen (active growth) phase, increasing vascular structures around follicles, and supporting the cellular environment that keeps follicles functioning.
When injected into the scalp, this concentrated growth factor environment delivers a biological signal directly to the follicle — stimulating activity at the cellular level rather than altering hormone signaling systemwide or relying on surface absorption. For patients who have not responded adequately to topical treatments or who prefer to avoid long-term medication, PRP represents a mechanistically distinct option with published clinical evidence behind it.
At ReNova Health, PRP for hair restoration is offered alongside our other PRP services. Our approach to the scalp application follows the same preparation standards we apply across all PRP treatments — platelet concentration, processing method, and injection technique all affect the quality of the final preparation and the likelihood of response.
What the Procedure Involves
A PRP hair restoration session follows the same initial steps as any PRP treatment: a blood draw, centrifugation to separate and concentrate the platelet layer, and preparation of the final injectable. The concentrate is then administered through a series of small injections distributed across the treatment area of the scalp.
The injection phase involves multiple small punctures across the scalp rather than a single injection. A topical numbing agent is applied before the procedure to improve comfort, and most patients tolerate the session without significant difficulty. The procedure typically takes between 45 and 60 minutes in total.
Post-procedure, patients are advised to avoid washing the scalp or applying products for a short window following treatment, and to avoid vigorous physical activity for the remainder of the day. There is no meaningful downtime — most patients return to normal activity the following day.
A series of sessions is standard for hair restoration applications. The referenced clinical trial used three treatment cycles, and most protocols involve monthly sessions over an initial course before transitioning to maintenance intervals. Response develops gradually — hair follicle biology operates on a cycle measured in months, not days — and we set those expectations clearly before treatment begins.
PRP for Skin Rejuvenation
The same growth factor biology that supports hair follicle activity has applications in skin rejuvenation. PRP has been studied and used clinically to address fine lines, skin texture, tone, and the effects of photoaging. When applied to the skin — either through microinjection or in combination with microneedling, which creates micro-channels that enhance absorption — the growth factors in PRP promote collagen production, increase dermal thickness, and improve vascular supply to the tissue.
This is sometimes referred to as a “vampire facial” in popular media, a name that references the blood draw involved. The procedure itself is considerably less dramatic than the name implies: the same autologous preparation used for injection is applied to skin that has been prepared with microneedling or similar technique, creating a controlled environment for growth factor uptake.
As with hair restoration, results from skin rejuvenation PRP develop gradually over several weeks to months, reflecting the time it takes for collagen remodeling and tissue-level changes to become visible. Individual responses vary, and we discuss realistic expectations during the consultation rather than making promises about specific cosmetic outcomes.
Addressing the Practical Questions
Two concerns come up most often when patients are considering PRP for hair or skin: whether it will actually work for their specific presentation, and whether the cost is justified when results take months to appear.
On efficacy: response varies by individual, by degree of hair loss, and by how long the follicles in question have been affected. PRP tends to produce better outcomes in patients with earlier-stage androgenic alopecia — where follicles are miniaturized but still present and viable — than in patients with complete follicle loss in a given area. We review the treatment area during consultation to give an honest assessment of what the evidence suggests for your specific presentation. We don’t treat every scalp the same.
On cost: PRP for cosmetic applications is not covered by insurance. We discuss cost before any commitment is made. For patients weighing PRP against continued long-term use of prescription medications with their own cost and side effect profiles, the comparison is worth making concretely. We’re willing to have that conversation.
Frequently Asked Questions
How many sessions will I need before I see results? Most patients follow an initial course of three monthly sessions before transitioning to a maintenance schedule. Visible improvement typically develops over two to three months following the start of treatment, as the hair growth cycle takes time to reflect the biological changes at the follicle level. Individual timelines vary.
Can PRP be combined with minoxidil or finasteride? In many cases, yes. PRP therapy is not incompatible with standard hair loss medications and may complement their effect by addressing follicular biology through a different mechanism. We review your current medications during consultation and discuss whether combining approaches makes sense for your situation.
Is PRP for hair loss appropriate for women as well as men? Yes. Androgenic alopecia affects both sexes, and the clinical trial evidence includes both male and female patients. The specific presentation, pattern of loss, and degree of follicle miniaturization all factor into whether PRP is an appropriate option regardless of sex.
What does the scalp feel like after the procedure? Mild tenderness and some redness at injection sites is common following the session and typically resolves within a day or two. Some patients notice mild swelling along the forehead in the day or two after treatment — a normal response to the injections. We review what to expect before you leave the clinic.
Can PRP regrow hair in areas where it’s already completely gone? PRP works by stimulating existing follicles that have become miniaturized or dormant. In areas where follicles are no longer present, there is nothing for the growth factors to activate. We assess follicle status during the consultation and are direct about which areas of the scalp are likely to respond and which are not.
Key Takeaways
- PRP for hair restoration delivers concentrated growth factors — including PDGF, VEGF, EGF, and IGF-1 — directly to hair follicles via scalp injection, stimulating activity at the cellular level rather than through systemic medication.
- A randomized, placebo-controlled trial found meaningful increases in hair count and density following three PRP treatment cycles, with no reported side effects.
- PRP tends to work best in patients with earlier-stage androgenic alopecia where follicles are still viable. Results develop gradually over months, not days.
- The same growth factor biology applies to skin rejuvenation applications, where PRP promotes collagen production and tissue remodeling.
- These treatments are not covered by insurance. Results vary by individual. Candidacy is assessed during consultation based on the specific presentation.
If hair loss or skin changes have been affecting your confidence and standard options haven’t produced the results you were hoping for, PRP may offer a biologically distinct approach worth exploring. Contact ReNova Health to schedule a consultation and get an honest assessment of what the evidence supports for your specific situation.
References
National Institutes of Health. The Effect of Platelet-Rich Plasma in Hair Regrowth: A Randomized Placebo-Controlled Trial. https://pmc.ncbi.nlm.nih.gov/articles/PMC4622412/
Medical Disclaimer
The information in this blog is provided for educational purposes only and does not constitute medical advice. PRP therapy for hair restoration or skin rejuvenation should only be pursued under the guidance of a licensed healthcare provider with full knowledge of your medical history. Individual results vary. Not all patients are candidates — a clinical evaluation is required before any treatment is recommended or performed. Please consult a qualified provider to discuss your specific condition and options.