PRP for Hair Loss: The Honest Version
If you’re researching PRP for hair loss, you’ve probably already noticed the problem. The clinics offering it say it’s transformative. The sceptics say it’s a waste of money. The truth — as usual — is more nuanced than either position.
I should say upfront: I don’t offer PRP in my practice. I have no commercial interest in whether you choose it or not. What follows is an honest reading of the evidence — what it shows, what it doesn’t, and what I’d want any client to understand before investing.
PRP has genuine clinical evidence behind it. But that evidence comes with significant caveats that most marketing material doesn’t mention. And the decision about whether PRP for hair loss is right for you depends entirely on what’s causing your hair loss in the first place — which is the question too many people skip.
What PRP Is and How It Works
PRP for hair loss is one of the most widely discussed non-surgical treatment options available today. PRP stands for platelet-rich plasma. The procedure is straightforward: a small amount of your blood is drawn, placed in a centrifuge to separate and concentrate the platelets, and the resulting plasma — now containing five to ten times the normal platelet concentration — is injected directly into the scalp.
Platelets contain growth factors, including platelet-derived growth factor (PDGF) and vascular endothelial growth factor (VEGF). When concentrated and delivered to the hair follicles, these growth factors are thought to stimulate follicle activity, extend the active growth phase of the hair cycle, and improve blood supply to the follicle.
Because PRP uses your own blood, the risk of allergic reaction or rejection is extremely low. It’s a minimally invasive procedure — multiple injections across the scalp, typically described as uncomfortable but tolerable. Most protocols recommend three to four initial sessions spaced four to six weeks apart, followed by maintenance sessions every six to twelve months.
What the Clinical Evidence Actually Shows
The evidence for PRP for hair loss is cautiously positive — but it comes with important qualifications.
A separate 2024 systematic review focused specifically on female hair loss (Yuan et al., Skin Research and Technology) also found that PRP effectively enhanced hair density and thickness in women, with a favourable safety profile.
So the evidence supports that PRP for hair loss can work. But here’s what the evidence also shows — and what the marketing rarely mentions:
There is no standardised protocol. This is the single biggest limitation in PRP research, and it matters enormously in practice. Different studies use different centrifuge systems, different platelet concentrations, different injection depths, different volumes, and different session frequencies. A PRP treatment at one clinic may be a fundamentally different product from a PRP treatment at another — even though both are called “PRP.”
Platelet concentration varies hugely. Basic centrifuge systems may achieve only 1.5 to 2 times normal platelet concentration. Advanced systems achieve 5 to 8 times. The growth factor delivery is directly tied to concentration. Not all PRP is equal — but most clinics don’t advertise which system they use or what concentration they achieve.
Most evidence is for androgenetic alopecia. The strongest evidence for PRP for hair loss relates to pattern thinning driven by genetic and hormonal factors. Evidence for other types of hair loss — telogen effluvium, alopecia areata, scarring alopecias — is more limited and less consistent.
Results are temporary. PRP does not permanently alter the hair growth cycle. Without maintenance sessions, the benefits typically diminish over time. This means an ongoing financial commitment, not a one-off treatment.
Study quality varies. While the 2025 meta-analysis included 43 RCTs, the authors noted variability in study quality. Some trials had small sample sizes, short follow-up periods, or methodological limitations. The evidence is growing — but it’s not yet at the level of, say, finasteride or minoxidil, which have decades of large-scale data behind them.
Understanding What PRP for Hair Loss Can’t Do
This is the part that matters most if you’re considering treatment.
PRP can’t fix a cause it doesn’t address. If your hair is shedding because your ferritin is low, PRP won’t raise your iron levels. If you’re experiencing telogen effluvium from stress, PRP won’t resolve the trigger. If a scalp condition is contributing to your thinning, PRP won’t treat the inflammation. Injecting growth factors into follicles that are struggling because of a nutritional, hormonal, or inflammatory problem is treating the symptom without addressing the source.
PRP can’t regrow hair from permanently lost follicles. In advanced androgenetic alopecia where follicles have been miniaturised beyond recovery, PRP is unlikely to produce meaningful regrowth. It’s most effective in earlier stages where follicles are still active but underperforming.
PRP is not a quick fix. Results — when they occur — take time to become visible. Most protocols recommend waiting three to six months after the initial course to assess response. And some people simply don’t respond. There is no way to predict with certainty who will benefit and who won’t before treatment begins.
The most common PRP scenario I encounter is not someone who’s had PRP and it didn’t work. It’s someone who had PRP without ever being properly assessed first. They noticed thinning, found a clinic offering PRP, and booked. Nobody checked their ferritin. Nobody looked at their scalp under a trichoscope. Nobody asked when the thinning started or what else was happening in their life.
They spent £1,000 to £2,000 on treatment for a problem that hadn’t been diagnosed. Sometimes PRP was appropriate for them — but sometimes it wasn’t. And by the time they sit in my chair, they’ve lost both money and time.
My own clinical preference is to work non-invasively — addressing the underlying causes through nutrition, scalp health, and lifestyle before considering procedures that involve trauma to the scalp. In many cases, that foundational work resolves or significantly improves the thinning before PRP ever enters the conversation. When it doesn’t, and PRP is still appropriate, the client is in a much better position to respond to it — because the underlying environment is right.
That’s not anti-PRP. That’s good clinical practice.
How Much Does PRP for Hair Loss Cost?
In the UK, PRP sessions typically cost between £200 and £600, with most clinics charging £250 to £500 per session. London clinics, particularly in Harley Street and central locations, tend to charge at the higher end — £400 to £600 or more. Clinics outside London often offer comparable treatment at lower cost, reflecting overheads rather than clinical quality.
Most protocols recommend three to four initial sessions, putting the first-course investment at roughly £800 to £1,500. Add maintenance sessions every six to twelve months, and the ongoing annual cost is £250 to £600 further. Over several years, the total investment is significant.
PRP for hair loss is not available on the NHS and is rarely covered by private insurance. The cost is entirely out-of-pocket — which makes it especially important to know whether it’s the right treatment for your specific situation before you begin.
When PRP for Hair Loss Might Be Appropriate
PRP may be a reasonable option when:
The diagnosis is confirmed. You know what’s causing your thinning — most commonly androgenetic alopecia — and it’s been assessed by a qualified professional, not self-diagnosed.
Underlying factors have been addressed. Bloods have been checked. Nutritional deficiencies have been corrected. Scalp conditions have been treated. The foundation is in place.
You understand it’s an adjunct, not a cure. PRP works best alongside a broader management plan — not as a standalone solution. It’s one tool in a toolkit, not the whole toolkit.
You have realistic expectations. Some improvement in density or slowing of progression is a realistic goal. Complete regrowth is not.
You’re prepared for the ongoing commitment. Results require maintenance. If you stop, the benefits are likely to diminish.
The clinic uses a quality system. Ask what centrifuge system they use, what platelet concentration they achieve, and what their protocol is based on. If they can’t answer these questions clearly, consider that a warning sign.
What Should Come Before PRP for Hair Loss
If you’re considering PRP, here’s what I’d recommend happens first:
Baseline blood tests. Ferritin, full thyroid function, vitamin D, full blood count, and hormones if appropriate. These identify treatable factors that may be contributing to the thinning — and that PRP won’t address. Read more about blood tests and hair loss.
A trichological assessment. Under a trichoscope, I can see whether your thinning is driven by miniaturisation (where PRP may have a role), diffuse shedding (where the trigger needs addressing first), or a scalp condition (which needs its own treatment). A trichologist can help you understand whether PRP is appropriate for your specific presentation before you invest.
The foundational work. Correct any deficiencies. Treat any scalp conditions. Establish the right cleansing rhythm. Support the body nutritionally. In my experience, this foundational approach resolves or meaningfully improves a significant number of cases without any invasive procedure. When PRP is still indicated after this, the follicles are in the best possible condition to respond to it.
Honest expectation-setting. Not everyone responds to PRP. Not every type of hair thinning is best treated with PRP. Knowing what you’re dealing with first means you spend your money where it’s most likely to make a difference.
Considering PRP but not sure it’s right for you?
Get a personalised assessment of your hair loss reviewed by Clare Devereux — before you invest.
Frequently Asked Questions — PRP for Hair Loss
Systematic reviews of clinical trials show that PRP can increase hair density compared with placebo, particularly for androgenetic alopecia. A 2025 meta-analysis of 43 randomised controlled trials found activated PRP effective for increasing density and reducing recurrence. However, results vary between individuals, there is no standardised protocol, and not everyone responds. PRP is most effective when the underlying cause has been properly diagnosed first.
PRP sessions in the UK typically cost £200 to £600, with most clinics charging £250 to £500 per session. An initial course of three to four sessions costs roughly £800 to £1,500, with maintenance sessions every six to twelve months ongoing. It’s not available on the NHS for hair loss and is rarely covered by private insurance.
Most people describe PRP injections as uncomfortable but tolerable. The procedure involves multiple small injections across the scalp. Some clinics apply a topical numbing cream beforehand to reduce discomfort. Side effects are generally mild — temporary redness, swelling, or tenderness at the injection sites.
Most protocols recommend three to four initial sessions spaced four to six weeks apart, followed by maintenance sessions every six to twelve months. The exact schedule depends on the clinic’s protocol and your individual response. Results — when they occur — typically become visible three to six months after the initial course.
PRP is most effective where follicles are still present but underperforming — typically in the earlier stages of androgenetic alopecia. In areas of long-standing, complete baldness where follicles have been permanently lost, PRP is unlikely to produce meaningful regrowth. Early intervention gives the best chance of a meaningful response.
They work differently. Minoxidil is a topical vasodilator with decades of large-scale clinical data behind it. PRP delivers concentrated growth factors directly to the scalp. Some studies suggest PRP may produce comparable or greater density improvements, but the evidence base for minoxidil is more extensive and more standardised. In many cases, PRP and minoxidil are used together as part of a broader plan rather than as alternatives.
I’d recommend the reverse. A trichological assessment identifies what’s actually causing your thinning — and whether PRP is appropriate for your specific situation. PRP doesn’t address nutritional deficiencies, scalp conditions, or hormonal factors. Knowing the cause first means you invest in the right treatment, not an expensive guess.
No. PRP does not permanently alter the hair growth cycle. The benefits typically diminish over time without maintenance sessions. This means an ongoing financial commitment rather than a one-off treatment. Understanding this before you begin helps set realistic expectations about both the results and the long-term cost.
Key Takeaways
- PRP for hair loss is supported by clinical evidence — systematic reviews show it can improve hair density, particularly for androgenetic alopecia.
- The biggest limitation is the lack of a standardised protocol — preparation methods, concentrations, and schedules vary widely between clinics, making treatment quality inconsistent.
- PRP does not address underlying causes such as nutritional deficiency, hormonal imbalance, or scalp conditions — these should be identified and treated first.
- Assessment before intervention: knowing what is causing your hair loss is the single most important step before investing in any treatment, including PRP.
This content is for informational purposes only and does not constitute medical advice. Please consult a qualified trichologist or GP for personalised guidance.
Hair Health Essentials was founded by Clare Devereux, one of Ireland and the UK’s leading IAT-certified clinical trichologists. We combine trichoscopy, blood biomarker analysis, and personalised treatment protocols with naturally formulated, COSMOS-certified products — because your hair deserves both the science and the care. Harley Street, London. Clinics also in Dublin.
This article is for information purposes and doesn’t replace medical advice. Please discuss any medication concerns with your prescribing doctor.
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IAT-Certified Clinical Trichologist
Clare Devereux
Clare is the founding clinical trichologist at Hair Health Essentials, practising in Dublin and London. With over a decade of clinical trichology experience underpinned by a lifetime in professional hair and scalp care, she specialises in personalised diagnostics — from trichoscopy and blood biomarker analysis to genetic testing — to identify what’s really happening with your hair and scalp.
Clinics: Blackrock, Dublin · Eden One, Dublin · Harley Street, London
Hair Health Essentials provides specialist trichological guidance. This content is for informational purposes and does not constitute medical advice. If you have concerns about your health, please consult your GP or medical practitioner.
With naturally formulated, COSMOS-certified products
— because your hair deserves both the science and the care.