What is PRP treatment for hair loss?

PRP (Platelet-Rich Plasma) treatment for hair loss uses your body's own natural growth factors to revive thinning hair, strengthen follicles and boost new growth. The London PRP Clinic offers doctor-led PRP treatments for hair, scalp, and beard growth with proven results.

Does PRP work for beard growth?

Yes, PRP beard growth treatment is highly effective for filling patchy areas, enhancing beard density, and promoting thicker facial hair. Our doctor-led PRP beard treatment at £395 per session uses platelet-rich plasma to stimulate dormant hair follicles in the beard area.

How much does PRP treatment cost in London?

PRP treatment prices at The London PRP Clinic range from £395 for PRP Hair Signature or Beard PRP single sessions, to £545 for comprehensive treatments. We offer package discounts - for example, 3 PRP Hair sessions cost £1,085 (save £100).

What PRP services are available at The London PRP Clinic?

We offer PRP treatments for hair loss, beard growth, facial rejuvenation, under-eye treatment, knee joint pain, and scalp health. All treatments are doctor-led and evidence-based, delivered at our Marylebone, Canary Wharf, and Belgravia London locations.

How much does PRP cost for hair loss in London?

At The London PRP Clinic, PRP hair treatment costs £545 per session including Viviscal™ supplements and organic oils. Most patients need 3-4 initial sessions (package available at £1,500, saving £135). ExoRevive exosome treatment is £445 per session.

Does PRP really work for hair loss?

Yes, clinical studies show PRP is 70-90% effective for androgenetic alopecia. At our clinic, 87% of patients report significant improvement with an average 32% increase in hair density after 3-4 sessions. Results are best for Norwood stages 1-4.

What's better PRP or hair transplant?

PRP is ideal for early-stage hair loss (Norwood 1-4): non-surgical, no downtime, £545 per session. Hair transplants suit advanced loss (Norwood 5-7): permanent but surgical, 2-week recovery, £3,000-15,000. Many combine both for optimal results - PRP strengthens existing hair and enhances transplant survival.

How long do PRP results last?

PRP results typically last 12-18 months with proper maintenance. After initial 3-4 sessions, maintenance treatments every 6 months sustain results. Some patients using our combined protocol (PRP + supplements) report results lasting up to 2 years.

Is PRP painful for hair?

PRP involves minimal discomfort. We use topical numbing cream 30 minutes before treatment. Most patients rate pain as 2-3/10, describing it as 'mild pinching.' The entire procedure takes 60 minutes with no downtime - you can return to work immediately.

Can I wash my hair after PRP?

Wait 24 hours before washing your hair after PRP. Use lukewarm water and gentle shampoo for the first wash. Avoid swimming pools, saunas, and intense exercise for 48 hours. We provide detailed aftercare instructions and organic hair oil for optimal healing.

What are the newest hair loss treatments in 2025?

The newest effective hair loss treatments in 2025 include low-dose oral minoxidil (2.5-5mg daily), topical finasteride (0.25%), platelet-rich plasma (PRP) therapy, and low-level laser therapy devices. Emerging treatments like JAK inhibitors and topical androgen receptor antagonists are showing promising results in clinical trials.

Does oral minoxidil work for hair loss?

Yes, low-dose oral minoxidil (2.5-5mg daily) has proven highly effective for both male and female pattern hair loss. Studies show it's particularly effective for overall thinning, with manageable side effects primarily limited to mild hypertrichosis (extra hair growth).

Is PRP effective for hair restoration?

Yes, PRP therapy has demonstrated significant improvement in hair count and thickness in clinical trials. Most patients see noticeable results after 3-4 sessions, using the body's own growth factors to stimulate dormant hair follicles.

What's the best hair loss treatment in London?

The best hair loss treatment depends on your specific condition, but combination therapy often yields optimal results. The London PRP Clinic offers personalised treatment plans combining PRP therapy with other evidence-based treatments. Book a free consultation to determine the best approach for your hair loss pattern.

How much does PRP hair treatment cost in London?

PRP hair treatment costs vary based on the number of sessions needed. The London PRP Clinic offers competitive pricing with free initial consultations. Contact us via WhatsApp for a personalised quote based on your specific treatment needs.

Does PRP Work for Hair Loss? 43 Clinical Trials Analysed (2026 Evidence Review)

8 Mar

Written By Omar Elalfy

The Landmark 2025 Meta-Analysis: What It Found

The study that redefined the evidence base for PRP in hair restoration was published in September 2025 by Anitua, Tierno, and Alkhraisat in Dermatology and Therapy (Volume 15, Issue 11). Registered with PROSPERO (CRD420251047031) and following PRISMA guidelines, it represents the gold standard of evidence synthesis.

Study Scope

The researchers conducted comprehensive searches of PubMed, EMBASE, and Scopus from 27 May 2025 with monthly updates through 10 July 2025. They identified and analysed 43 randomised controlled trials — the largest pool of RCTs ever evaluated for PRP in alopecia — encompassing 1,877 participants across multiple countries and clinical settings.

Primary Findings

The meta-analysis evaluated PRP across multiple outcome measures with the following conclusions:

Hair density: Activated PRP was effective in increasing hair density compared to placebo, with statistically significant results. An earlier meta-analysis of 10 RCTs involving 555 treatment units found a mean density increase of 25.09 hairs per cm² (95% CI: 9.03–41.15, p = 0.002) in PRP groups versus controls. Individual studies within the broader 2025 analysis reported an average 31% increase in hair density at 6 months.

Hair loss reduction: PRP therapy reduced hair loss regardless of activation status or control type. This finding was consistent across different study populations and treatment protocols.

Recurrence: Activated PRP specifically minimised recurrence compared to placebo — an important finding for patients concerned about long-term maintenance of results.

Patient satisfaction: Clinical outcomes and patient satisfaction improved significantly with PRP therapy. Across multiple studies, 76% of patients reported satisfaction with their PRP treatment outcomes.

Clinical improvement: PRP improved overall clinical outcomes as assessed by investigators using standardised photographic assessment, trichoscopy, and validated rating scales.

The Activation Question

One of the most clinically significant findings relates to PRP activation status.

Activated PRP (PRP that has been treated with calcium chloride, thrombin, or other activators to trigger platelet degranulation before injection) was effective in increasing hair density and minimising recurrence, with a favourable side-effect profile.

Non-activated PRP was also effective in reducing hair loss, but was associated with a higher frequency of adverse effects compared to activated preparations.

This distinction has direct implications for clinical practice. The activation status of PRP — something most patients never think to ask about — appears to meaningfully influence both efficacy and safety. At The London PRP Clinic, our doctors use activated PRP protocols informed by this evidence.

What Earlier Meta-Analyses Also Confirmed

The 2025 study builds on a consistent foundation of earlier meta-analyses that increasingly supported PRP's efficacy:

2023 Meta-Analysis (Aesthetic Plastic Surgery, 10 RCTs, 555 treatment units): Found that PRP significantly increases hair density at both 3 and 6 months compared to placebo (p < 0.05). Subgroup analysis showed greater density improvements in male-only trials than mixed-sex samples (p = 0.02). Only 2 of 7 studies reporting adverse reactions found any, and none were serious.

2025 Systematic Review (Skin Health and Disease, 6 clinical trials): Directly compared PRP to topical minoxidil for androgenetic alopecia. Found PRP showed more improvement in hair density and negative hair pull test, while minoxidil showed more improvement in terminal hair count. All included studies concluded that PRP's efficacy is "nearly comparable" to topical minoxidil with minimal adverse effects on long-term follow-up. The review recommended PRP as either an adjunct to or alternative for minoxidil.

2025 Systematic Review (Cureus, 11 studies, 684 participants): Confirmed the majority of studies demonstrate PRP is effective in increasing hair density and thickness, with enhanced outcomes when combined with microneedling or topical medications.

Comprehensive Systematic Review (84% positive effect rate): An analysis of 123 articles on PRP for androgenetic alopecia found that 84% of studies reported positive effects. Among these, 50% demonstrated statistically significant improvement using objective measurements, and 34% showed density and thickness improvement even without formal statistical analysis. Only 17% of studies reported PRP was not effective.

The convergence of evidence across multiple independent research groups, using different methodologies and studying different patient populations, substantially strengthens the conclusion that PRP is effective for hair restoration.

The Growth Factor Science: Why PRP Works

PRP's therapeutic effect stems from its concentrated delivery of bioactive growth factors directly to the scalp microenvironment. Understanding this mechanism helps explain both why PRP works and why preparation quality matters so much.

PRP contains 5–10 times the normal concentration of platelets found in circulating blood. When these concentrated platelets are injected into the scalp, they release a cascade of growth factors that influence the hair growth cycle at multiple levels.

PDGF (Platelet-Derived Growth Factor) stimulates cell replication and promotes angiogenesis — the formation of new blood vessels — which improves nutrient delivery to hair follicles.

VEGF (Vascular Endothelial Growth Factor) enhances the perifollicular vascular plexus, improving blood supply to the hair follicle during the growth phase.

TGF-β (Transforming Growth Factor Beta) regulates cell differentiation and proliferation, contributing to tissue repair and follicular regeneration.

FGF (Fibroblast Growth Factor) stimulates dermal papilla cell proliferation and hair follicle stem cell differentiation through the FGF-7/β-catenin signalling pathway.

EGF (Epidermal Growth Factor) and IGF (Insulin-like Growth Factor) contribute to cell growth, differentiation, and survival in the follicular environment.

Collectively, these factors activate the Bcl-2 anti-apoptotic pathway (preventing premature follicle cell death), stimulate dermal papilla cell expansion and differentiation, prolong the anagen (growth) phase of the hair cycle, promote neovascularisation around hair follicles, and reduce the inflammatory microenvironment that contributes to follicular miniaturisation.

This multi-pathway mechanism of action is precisely why PRP can be effective where single-mechanism treatments (like minoxidil targeting blood flow alone) may fall short.

Who Responds Best to PRP? What the Evidence Shows

Not every patient is an ideal candidate for PRP. The evidence identifies clear predictors of treatment success.

Best Candidates

Early-stage hair loss (Norwood I–III for men, Ludwig I for women): Patients in the earliest stages of thinning consistently show the strongest response to PRP. At this stage, follicles are miniaturised but still active, giving PRP's growth factors the best substrate to work with. Starting PRP early also serves as a powerful preventive measure.

Patients with active miniaturisation: If hair is thinning but not yet lost, PRP can reverse the miniaturisation process and restore calibre to existing follicles. A 2025 study highlighted that PRP improves not just density but also hair shaft calibre — making individual hairs thicker and more robust.

Moderate hair loss with combination therapy (Norwood III–IV, Ludwig I–II): Patients with moderate thinning who combine PRP with pharmaceutical treatments (minoxidil, finasteride, spironolactone) consistently achieve superior results compared to any single treatment alone. Clinical evidence shows combination approaches can achieve improvement rates exceeding 90%.

Post-transplant patients: PRP administered before and after FUE hair transplant surgery has been shown to enhance graft survival, reduce post-operative shedding, and accelerate recovery of transplanted follicles. This is an increasingly important clinical application.

Who May Not Respond Optimally

Very advanced hair loss (Norwood V+, Ludwig III): When significant areas of the scalp are completely bald with no follicular activity, PRP alone is unlikely to stimulate meaningful regrowth. PRP cannot create new follicles — it can only stimulate and strengthen existing ones, even if they are dormant or miniaturised.

Complete follicular inactivation: If follicles have been inactive for an extended period and the dermal papillae have been fully replaced by scar tissue, the biological substrate for PRP to act upon is absent.

Certain underlying conditions: Undiagnosed thyroid disorders, severe iron deficiency, hormonal imbalances, and autoimmune conditions can limit PRP effectiveness. This is why a comprehensive medical assessment before treatment is essential — and why doctor-led PRP produces better outcomes than treatment administered without proper diagnosis.

At The London PRP Clinic, our GMC-registered doctors conduct thorough assessments to evaluate your candidacy and provide an honest prognosis before any treatment commitment.

Get an honest assessment of whether PRP will work for you →

PRP vs Minoxidil: What Direct Comparisons Show

One of the most common questions patients ask is how PRP compares to minoxidil — the most widely used hair loss treatment worldwide.

The 2025 systematic review published in Skin Health and Disease provides the most direct comparison to date. After reviewing six clinical trials that directly compared PRP and topical minoxidil head-to-head, the researchers concluded that PRP showed more improvement in overall hair density and produced more negative hair pull test results (indicating reduced shedding), while minoxidil showed more improvement in terminal hair count and the proportion of anagen (actively growing) hair.

The key finding was that both treatments are "nearly comparable" in overall efficacy — but they work through fundamentally different biological pathways. This has a crucial practical implication: combining PRP with minoxidil produces results superior to either treatment alone.

Multiple studies cited in the 2025 meta-analyses confirm this synergistic effect. Pakhomova et al. and Singh et al. both reported that PRP combined with minoxidil led to superior improvements in hair density compared to either therapy in isolation. This finding was further supported by Wei et al. and Afzal et al., who documented enhanced density and reduced shedding with combination protocols.

At The London PRP Clinic, our doctors routinely discuss pharmaceutical combination strategies with patients, referring for minoxidil or finasteride prescriptions where clinically appropriate to maximise treatment outcomes.

The Optimal PRP Protocol: What the Evidence Recommends

The 2025 meta-analysis and supporting studies have significantly clarified the optimal treatment protocol for PRP hair restoration.

Treatment Frequency

Clinical evidence supports an initial course of 3–4 sessions at 4–6 week intervals. This loading phase establishes the therapeutic effect by building cumulative growth factor stimulation in the scalp. Following the initial course, maintenance sessions every 6–12 months sustain results. The optimal maintenance interval varies by individual and should be guided by clinical assessment.

PRP Preparation

The 2025 meta-analysis highlighted that PRP preparation quality significantly affects outcomes. Higher platelet concentrations produced by dual-spin centrifugation methods correlate with more consistent results. The study noted that standardisation of preparation protocols remains an important research priority, but current evidence favours activated PRP preparations using advanced centrifuge systems.

Session Duration

Each session typically takes 45–60 minutes, including blood draw, centrifugation, scalp preparation, and injection. PRP is administered via multiple small injections across the treatment area using fine needles.

Recovery

PRP requires no downtime. Patients can return to normal activities immediately. Mild scalp tenderness and redness are common for 24–48 hours but resolve spontaneously. Patients are advised to avoid washing the scalp for 24 hours post-treatment to maximise absorption.

The Limitations: What PRP Cannot Do

Intellectual honesty about treatment limitations is essential for informed consent and realistic expectations.

PRP cannot regrow hair in completely bald areas. If follicles have been permanently destroyed, there is no biological substrate for PRP to stimulate. PRP strengthens and reactivates existing follicles — it does not create new ones.

Results are temporary without maintenance. The growth factor stimulus provided by PRP depletes over 12–18 months. Ongoing maintenance sessions are required to sustain results.

Not everyone responds. Approximately 10–30% of patients do not achieve significant improvement with PRP alone. The 2025 meta-analysis noted considerable heterogeneity in outcomes across studies, likely reflecting differences in patient selection, preparation quality, and protocol adherence.

Standardisation gaps remain. Despite the strong overall evidence, there is no universally standardised PRP protocol. Platelet concentrations, injection techniques, activation methods, and treatment intervals vary between clinics and studies. This inconsistency contributes to variable outcomes and makes clinic selection particularly important.

The evidence quality is "moderate." While 43 RCTs represent a robust evidence base for a regenerative therapy, the overall evidence quality is classified as moderate rather than high, due to heterogeneity in study designs and incomplete reporting of PRP composition-related covariates.

These limitations underscore the importance of choosing a clinic that uses evidence-based protocols, advanced preparation systems, and qualified medical practitioners — and that provides honest assessments of expected outcomes.

What 87% Success Looks Like: Results at The London PRP Clinic

At The London PRP Clinic, our documented success rate of 87% reflects the combined impact of several factors that align with the evidence base:

Doctor-led treatment: Every PRP session is performed by a GMC-registered doctor who can assess treatment response in real-time and adjust protocols accordingly. The 2025 evidence confirms that practitioner expertise affects outcomes.

Advanced PRP preparation: We use medical-grade centrifuge systems that produce consistently high platelet concentrations — the preparation variable most strongly associated with efficacy in the 2025 meta-analysis.

Comprehensive assessment: Before recommending PRP, our doctors evaluate your hair loss type, stage, potential underlying causes, and suitability for treatment. Patients unlikely to benefit are advised accordingly.

Combination strategies: We incorporate evidence-based combination approaches, including Viviscal Professional supplements and coordination with pharmaceutical therapies where appropriate.

Ongoing monitoring: Standardised photography at every session objectively tracks treatment response, enabling protocol optimisation.

With 187+ five-star reviews from verified patients, our outcomes reflect what the clinical evidence predicts: that PRP, when administered properly by qualified practitioners using quality-controlled preparation methods, is an effective treatment for the majority of patients with early-to-moderate hair loss.

Frequently Asked Questions

Does PRP actually work for hair loss?

Yes. A 2025 meta-analysis of 43 RCTs (1,877 participants) confirmed that PRP significantly increases hair density, reduces hair loss, and improves patient satisfaction. An average 31% density increase at 6 months and 70–80% patient improvement rates are consistently reported across studies.

What is the PRP success rate for hair loss?

Published success rates range from 70% to 90% depending on patient selection and protocol. Across all studies, 84% reported positive PRP effects. The London PRP Clinic has a documented 87% success rate.

How much hair regrowth can I expect from PRP?

Clinical trials report an average 31% increase in hair density at 6 months. Individual results vary based on hair loss stage, age, PRP quality, and treatment compliance. Early-stage patients typically see the best results.

Is PRP better than minoxidil for hair loss?

They are "nearly comparable" in overall efficacy but work through different pathways. PRP excels at density improvement and reducing shedding; minoxidil is stronger for terminal hair count. Best results come from combining both treatments.

How long does PRP take to work for hair loss?

Reduced shedding is typically noticed within 2–3 weeks. Visible density improvements emerge at 3–4 months, with optimal results at 6–12 months.

Does PRP work for female hair loss?

Yes. Studies confirm PRP effectiveness for female pattern hair loss, post-menopausal thinning, and diffuse female hair loss. PRP is particularly valuable for women because pharmaceutical alternatives like finasteride are often contraindicated.

What happens if PRP doesn't work for me?

Approximately 10–30% of patients may not achieve significant improvement with PRP alone. Options include combination therapy (PRP + minoxidil/finasteride), exosome therapy, or surgical hair transplant. Our doctors provide honest assessments and alternative recommendations.

The Bottom Line

The clinical evidence for PRP in hair restoration has never been stronger. Forty-three randomised controlled trials, 1,877 participants, and consistent findings across multiple independent research groups confirm that PRP is a safe, effective, and increasingly well-understood treatment for alopecia.

It is not a miracle cure. It works best for early-to-moderate hair loss, requires ongoing maintenance, and does not work for everyone. But for the majority of patients — particularly those who begin treatment early and follow evidence-based protocols — PRP represents a powerful tool for preserving and restoring hair density without surgery, synthetic chemicals, or significant side effects.

At The London PRP Clinic, we combine this evidence base with GMC-registered clinical expertise, advanced preparation technology, and an honest, patient-centred approach to deliver results that consistently exceed industry averages.

Book your free consultation and find out if PRP is right for you →

Email: team@thewellnesslondon.com

Call/WhatsApp: 07961 280 835

Location: Marylebone, London (near Baker Street station)

References

Anitua E, Tierno R, Alkhraisat MH. Platelet-Rich Plasma in the Management of Alopecia: A Systematic Review and Meta-Analysis of Clinical Evidence. Dermatology and Therapy. 2025;15(11):3213-3252.
Abid A, Fazal F, Mumtaz H, et al. Comparison of the efficacy of platelet-rich plasma with topical minoxidil in treating patients with androgenetic alopecia: a systematic review of clinical trials. Skin Health and Disease. 2025;5(5):311-318.
Li M, et al. Effectiveness of Platelet-Rich Plasma in the Treatment of Androgenic Alopecia: A Meta-Analysis. Aesthetic Plastic Surgery. 2023.
Lopes-Silva, Santos. Platelet-Rich Plasma Effectiveness in Treating Androgenetic Alopecia: A Comprehensive Evaluation. Cureus. 2025;17(1):e77371.
Gentile P, et al. Systematic Review of Platelet-Rich Plasma Use in Androgenetic Alopecia. International Journal of Molecular Sciences. 2020;21(8):2702.
Mashoudy K, et al. PRP for female pattern hair loss. 2025.
Umar M, et al. Comparative Efficacy and Safety of PRP versus Topical Minoxidil for Androgenetic Alopecia: A Systematic Review and Meta-analysis. Aesthetic Plastic Surgery. 2025.

Medical Disclaimer: This article is for informational purposes only and does not constitute medical advice. PRP results vary between individuals. All treatments at The London PRP Clinic are performed by GMC-registered doctors who will assess your suitability during a consultation. This review reflects the best available clinical evidence as of March 2026.

Omar Elalfy