Does PRP Work for Beard Growth and Eyebrows. What the Evidence Does Not Show
There is no randomised trial of PRP for beard growth and none for eyebrows. The 43 trials supporting PRP are all on scalp pattern hair loss, and a patchy beard or thin brow is a different problem. Most patchy beards are genetic or alopecia areata, and most thin brows are over-plucking or age. Both are sold on borrowed evidence.
Key points
A 2025 meta-analysis in Dermatology and Therapy of 43 randomised controlled trials and 1,877 participants found activated PRP increased hair density against placebo. Every trial was on scalp hair. None studied the beard or eyebrows.
The one condition affecting beards for which PRP has any trial evidence is alopecia areata, where a 2013 randomised trial of 45 patients on the scalp found PRP beat triamcinolone and placebo over a year. Beard alopecia areata was not part of that trial.
A UK survey reported that 69 percent of men aged 18 to 39 choose to have some facial hair, which is why beard treatments are marketed hard, and why the gap between demand and evidence is wide.
Minoxidil applied to the beard area is widely used off licence for patchy beards, and to the brows for thin eyebrows, on the basis of scalp evidence and small studies rather than trials specific to either area.
If you have a patchy beard or thinning brows and want to know what will actually help, message us on WhatsApp or email team@thewellnesslondon.com and a doctor will tell you what the cause is before anyone talks about injections.
Why the scalp evidence does not transfer
PRP has a real evidence base for one condition. Pattern hair loss on the scalp is the hormone-driven miniaturisation of follicles that were once producing thick hair, and the 43 randomised trials pooled in the 2025 meta-analysis in Dermatology and Therapy show PRP pushes those follicles back towards thicker growth. That mechanism has a target. A follicle that is shrinking can be stimulated.
A patchy beard rarely has that target. Most patchy beards are patchy because the follicles in those areas never produced terminal hair in the first place, which is genetic and hormonal, and there is no miniaturised follicle to rescue. Thin eyebrows are most often the result of years of plucking or waxing, which eventually stops follicles regrowing, or of age, thyroid disease or a scarring condition. In none of those is there a trial showing PRP does anything, and the mechanism that works on the scalp does not obviously apply. Clinics offering beard and brow PRP quote the scalp trials because there is nothing else to quote, and a patient should know that the number being cited is for a different body part and a different disease.
What a patchy beard usually is
Four causes account for most patchy beards, and PRP has evidence for none of them. The first and commonest is genetics. Beard density is set by the number of follicles in the skin and their sensitivity to androgens, both inherited, and a man whose father and brothers have sparse cheeks has sparse cheeks. Nothing injected changes the follicle count.
The second is age. Beards continue to fill in through the twenties and sometimes into the thirties, and a patchy beard at 22 is often a full beard at 30 without treatment. The third is alopecia areata, which produces smooth, round, completely bare patches in an otherwise normal beard, often with short broken hairs at the edges, and is the one cause with a treatment pathway, since it is autoimmune and responds to steroid injections. PRP has a 45-patient scalp trial in that condition and nothing beard-specific. The fourth is a fungal infection or a scarring folliculitis, both of which need a diagnosis and a different treatment. A doctor with a dermatoscope can separate these in a minute, and the answer for most men is either time, a beard transplant, or treatment of a specific condition, not PRP.
Send us a photograph of the patchy area on WhatsApp and a doctor will tell you which of the 4 it is and what, if anything, treats it.
What thin eyebrows usually are
Eyebrow thinning has its own short list. Over-plucking and waxing over years is the commonest cause, and repeated removal eventually damages the follicle so that it stops regrowing, which is why brows plucked thin in the 1990s often never came back. Age thins brows in everyone. An underactive thyroid classically thins the outer third of the brow and is worth a blood test. Frontal fibrosing alopecia, a scarring condition that mostly affects women after the menopause, causes eyebrow loss alongside a receding, band-like hairline and needs a dermatologist promptly, because the scarring is permanent once established. Alopecia areata can affect the brows as it does the beard.
For over-plucked and age-thinned brows the follicles that remain can sometimes be encouraged with topical minoxidil or a prostaglandin analogue serum, and for brows where follicles have gone, an eyebrow transplant places hair there. Where the cause is thyroid or a scarring condition, the treatment is for the cause. PRP has no trial in any of these, and a clinic injecting PRP into an over-plucked brow is treating skin in which the follicles have been mechanically destroyed with a product designed for follicles that are shrinking.
What does have evidence for beards and brows
Minoxidil is the treatment most often used for both, off licence, on the strength of the scalp evidence and small studies. Applied to the beard area it can thicken existing fine hairs and is widely used, with results that fade if it is stopped. Applied to the brows it is used similarly, with care to keep it out of the eyes. For alopecia areata in the beard or brow, intralesional triamcinolone is the standard treatment, with the caveat that steroid can thin facial skin, which is the one reason a doctor might reasonably consider PRP as an alternative on the scalp trial evidence.
The treatment with the strongest record for placing hair where there is none, in either area, is a transplant. Beard transplants move scalp follicles to the cheeks and jaw and are well established. Eyebrow transplants are a specialist procedure that places single follicles at the correct angle and are the only option for brows where follicles have gone. Both are surgery, both cost thousands, and both are the honest answer for a man or woman who wants hair in an area that has never had it or has lost it permanently.
A beard and brow check before any treatment
Work through this before booking anything, including here.
Are the sparse areas of your beard smooth and completely bare in round patches, with short broken hairs at the edge. That fits alopecia areata and needs a diagnosis and steroid injections, not PRP.
Have the sparse areas always been sparse, and do the men in your family have the same pattern. That is genetics, and the options are time, minoxidil for what is there, or a transplant.
Are you under 30. Beards often fill in for another decade, and waiting costs nothing.
Have your brows been plucked or waxed thin for years. The follicles may have gone, and a transplant is the only thing that places hair there.
Is the outer third of your brows thinning, with tiredness or weight gain. That is worth a thyroid test before anything else.
Is your hairline receding in a band alongside brow loss. That needs a dermatologist promptly.
Our doctors put it this way. We are asked about beard and brow PRP every week, and the honest answer is that nobody has tested it. We will treat a patchy beard, but we will diagnose it first, and for most men the answer is not a syringe.
Message us on WhatsApp with a photograph, how long the area has been sparse, and whether it runs in the family, and a doctor will give you a straight answer, including if that answer is time or a transplant.
What PRP does not do for beards and brows
PRP does not create follicles where there are none, which is the situation in most patchy beards and over-plucked brows. It has no randomised trial for either area, and the 43-trial evidence belongs to scalp pattern loss. It does not treat the thyroid or scarring causes of brow loss, and it does not replace steroid injections for alopecia areata in the beard, where its only support is a scalp trial. Results in the scalp fade without maintenance, so any beard or brow effect would presumably too. It is not available on the NHS. A clinic selling a course of beard or brow PRP is selling a hypothesis at a course price.
What it costs, and what an untested course costs
Flagship Harley Street and Mayfair clinics commonly charge £600 to £850 or more per session of hair PRP, and beard and brow sessions are priced similarly, with a course of 3 taking a plan past £2,000. A beard transplant or eyebrow transplant in the UK sits within the £5,000 to £17,000 range for hair transplants, with the smaller graft numbers involved at the lower end.
The reframing is what the money proves. A PRP course for a patchy beard is £2,000 spent to find out whether an untested idea works on you, with no trial to say what the odds are. The same money is a substantial share of a beard transplant, which has a long record of doing exactly what the patient wants, or it is nothing at all if the beard is going to fill in by 30. The expensive option here is the one nobody has tested.
Care at The London PRP Clinic by The Wellness is doctor-led and priced below flagship rates, with your exact figure confirmed at the free suitability review, which for beards and brows starts with a diagnosis and, for most, ends with advice rather than a booking.
Ask about a beard or brow assessment on WhatsApp and we will explain what the review covers.
The free suitability review
Every enquiry here starts with a free, doctor-led suitability review rather than a booking. A GMC-registered doctor examines the beard or brows with a dermatoscope, identifies whether the cause is genetic, autoimmune, mechanical, hormonal or scarring, arranges a thyroid test where the pattern suggests it, and gives one of two answers. Either you are approved for treatment, which for beards and brows means a specific diagnosis such as alopecia areata with a stated reason for choosing PRP over steroid, or you are not approved, with an honest explanation of what would serve you better, whether that is minoxidil, time, a dermatologist, or a transplant surgeon.
We decline a meaningful share of the people who enquire. For beards and brows that share is most of them, because the honest answer is usually not a treatment we sell.
Why people choose The London PRP Clinic by The Wellness
An 87 percent patient success rate across treatments.
A 32 percent average density increase reported in our hair restoration programme.
More than 187 five star reviews.
Every treatment performed by a GMC-registered doctor.
100 supervised treatments completed by every clinician before they treat a patient here unsupervised.
Frequently asked questions
Does PRP work for beard growth
There is no randomised trial of PRP for beard growth. The 43 trials supporting PRP are all on scalp pattern hair loss. Most patchy beards are genetic, with no miniaturised follicle for PRP to stimulate. Where the cause is alopecia areata, steroid injections are the standard treatment.
Does PRP work for eyebrows
No trial has tested it. Thin brows are usually the result of years of plucking, age, thyroid disease or a scarring condition, and PRP has no evidence in any of those. Minoxidil or a prostaglandin serum can thicken remaining hairs, and an eyebrow transplant places hair where follicles have gone.
Why is my beard patchy
Usually genetics, which sets the follicle count and androgen sensitivity, or age, since beards fill in through the twenties. Smooth round bare patches with broken hairs at the edges fit alopecia areata, which is autoimmune and treatable. Scaling or pustules fit infection or folliculitis and need a diagnosis.
Can a patchy beard be fixed
Depending on the cause. Alopecia areata responds to steroid injections. Fine existing hairs may thicken with minoxidil. Follicles that were never there can only be added by a beard transplant. A beard at 22 often fills in by 30 on its own. A doctor with a dermatoscope can tell you which applies.
Does minoxidil work for beard and eyebrow growth
It is widely used off licence for both, on scalp evidence and small studies rather than trials specific to the beard or brows. It thickens existing fine hairs rather than creating follicles, and the effect fades when it is stopped. Keep it out of the eyes when used on brows.
How much does a beard or eyebrow transplant cost in the UK
Within the UK hair transplant range of £5,000 to £17,000, usually at the lower end because fewer grafts are needed. It is the only treatment that places hair where follicles have gone, and it needs a surgeon experienced in facial hair angles.
References
Dermatology and Therapy, 2025. Platelet-rich plasma in the management of alopecia, a systematic review and meta-analysis of 43 randomised controlled trials and 1,877 participants, all on scalp hair. https://link.springer.com/article/10.1007/s13555-025-01542-8
British Journal of Dermatology, 2013. Trink et al. A randomised, double-blind, placebo and active-controlled half-head study of platelet-rich plasma on scalp alopecia areata, 45 patients. https://pubmed.ncbi.nlm.nih.gov/23607773/
Wimpole Clinic, 2025. PRP for beard growth, including the UK survey finding that 69 percent of men aged 18 to 39 choose to have facial hair.
Dermatology and Therapy, 2020. Alves and Grimalt. Review of platelet-rich plasma in alopecia, including the position on alopecia areata and cicatricial alopecias.
UK hair transplant price range from the anchoring library of The Wellness Blog Production Playbook, re-verified September 2026.
London clinic price lists for hair PRP, accessed September 2026.
This article is for general information and does not replace a medical assessment. Speak to one of our doctors before deciding on any treatment for beard or eyebrow hair loss.