PRP and Mesotherapy for Hair Loss: What the Evidence Actually Says

The short version

• PRP has reasonable evidence for increasing hair density — roughly comparable to topical minoxidil.
• Trial quality is inconsistent: preparation methods and protocols vary enormously between clinics.
• Neither treatment stops the underlying cause, so results require ongoing maintenance sessions.
• The Barber does not offer PRP or mesotherapy. These are medical procedures requiring a doctor.

Once again, plainly: we are a grooming salon and we do not provide PRP, mesotherapy or any injectable treatment. This guide exists because men sitting in our chairs ask what these treatments actually do, and because the marketing around them in Cairo is considerably more confident than the science.

PRP and mesotherapy have become the standard offer for men in their thirties and forties who want to act on thinning hair without surgery. Both are legitimate medical treatments with real evidence behind them. Both are also routinely oversold. Here is the honest position.

What is PRP and does it work?

PRP — platelet-rich plasma — involves drawing your blood, spinning it in a centrifuge to concentrate the platelets, and injecting that concentrate into the scalp. The theory is that platelet growth factors stimulate dormant follicles and extend the growth phase.

The evidence is genuinely encouraging but not spectacular. A 2025 meta-analysis pooling 43 randomised controlled trials across roughly 1,877 participants found that activated PRP increased hair density compared with placebo and improved patient satisfaction. Multiple reviews put its efficacy as broadly comparable to topical minoxidil.

Two findings deserve more attention than clinics usually give them. First, the same analyses found no significant improvement in individual hair thickness — density improved, but existing hairs did not measurably thicken. Second, and more importantly, reviewers consistently flag substantial heterogeneity: preparation methods, spin protocols, injection schedules and activation steps varied enormously between studies, and none used standardised assessment tools.

What that means practically is that "PRP" is not one treatment. The PRP at one Cairo clinic may differ meaningfully from the PRP at another, and the trial data cannot tell you which protocol you are being offered. That is the single most useful thing to understand before a consultation.

What about mesotherapy?

Mesotherapy delivers micro-injections of a drug cocktail directly into the scalp — most commonly low-dose dutasteride, sometimes combined with vitamins or minoxidil. The aim is local delivery with less systemic exposure than tablets.

The evidence base is smaller and lower quality than PRP’s, but consistent in direction. A 2022 retrospective review of 541 patients with androgenetic alopecia found marked improvement in the majority, with around 38% showing significant improvement. Notably, no sexual side effects were reported in that cohort, against a roughly 4–7% risk associated with oral dutasteride — which is the main reason men consider it.

The counterweight matters too: meta-analysis suggests dutasteride mesotherapy is significantly less effective than oral dutasteride at 0.5mg daily. You are generally trading some efficacy for a better side-effect profile. That may well be the right trade for you, but it should be a decision you make knowingly rather than one presented as a free upgrade.

Do these treatments stop hair loss permanently?

No. Neither addresses the underlying cause of androgenetic alopecia, which is a genetically determined follicle sensitivity to DHT. They stimulate and support follicles that are still alive; they cannot revive follicles that are already gone.

Two consequences follow. Maintenance sessions are required indefinitely — typically an initial course of monthly sessions followed by top-ups every few months — and if you stop, the benefit fades. Any clinic presenting a fixed course as a permanent fix is misrepresenting how these treatments work.

It also means timing matters enormously. These treatments work best on thinning hair, not bare scalp. A man who acts at the first signs of diffuse thinning has far more to preserve than one who waits five years. If you are noticing more hair in the drain than you used to, that is the moment for a dermatologist appointment, not the moment to wait and see.

What should you ask at a consultation?

1. What exactly is in the injection? For mesotherapy, ask for the drugs and concentrations. "Our special formula" is not an answer.
2. What is the PRP preparation protocol? Spin speed, whether the PRP is activated, and platelet concentration achieved. Good clinics know these numbers.
3. How many sessions, over how long, and then what? Get the maintenance schedule and its ongoing cost before you start, not after session three.
4. Is a doctor performing the injections? These are medical procedures.
5. What else should I be doing? A clinic that never mentions minoxidil or finasteride — the treatments with the strongest evidence base — is selling a service rather than treating a condition.

Be wary of before-and-after photographs taken with different lighting, hair length, wetness or angle. Wet hair looks thinner and freshly styled dry hair looks denser, which makes the most common marketing image in this industry nearly meaningless.

Where a barbershop genuinely fits

Not in the treatment, but around it. Scalp health is the foundation any medical hair treatment builds on, and it is the part men most often neglect while spending heavily on injections.

Our anti-dandruff scalp treatment (1,150 EGP, 45 minutes) addresses flaking and inflammation — persistent scalp inflammation is worth resolving whatever else you are doing about your hair. Hair fibres (125 EGP, 20 minutes) offer immediate cosmetic density while medical treatments take their six to twelve months to show anything.

And the least glamorous point: a barber who sees your scalp every few weeks is well placed to notice change early. If we flag thinning at your temples or crown, that is worth acting on sooner rather than later — see a dermatologist.

For the surgical side of this subject, read our guide to hair transplants and DHI in Cairo. Or see our full service list and book at Al Rehab or Madinaty.