Exosome Hair Treatment, Explained: What It Treats, Who It Suits and What to Expect
15 October 2026 · 8 min read
Key takeaways
Exosome hair treatment delivers a concentrated dose of growth factors, proteins and signalling molecules into the scalp to stimulate follicles that have miniaturised but are still present. At Mesglo in Marylebone, exosome hair regeneration starts from £650 a session, takes 45 to 60 minutes, and is normally a course of three sessions about four weeks apart. This guide sets out what the treatment is doing, who it suits, what the timeline actually looks like and what the aftercare asks of you, so you can decide whether it belongs in your plan.
- Exosomes are membrane bound packages cells use to signal to one another. They are not cells and they are not drugs
- Suitable for men and women with thinning or early stage hair loss, and most effective when started early
- It will not restore an area that is genuinely bald, because the follicles there have scarred over
- From £650 a session, normally three sessions about four weeks apart
- 45 to 60 minutes a session, with no meaningful downtime
- Hair quality may improve within four to six weeks; visible new growth typically takes three to six months
- The fee covers the scalp analysis, the solution, the treatment, your photographs and the review
What the treatment is actually doing
Exosomes are tiny membrane bound packages that cells release to communicate with one another. Each one carries a cargo of growth factors, proteins and signalling molecules, and when a cell takes one up it receives instructions: repair, divide, increase blood supply. That is the whole mechanism, and it is worth being clear that exosomes are neither cells nor medicines.
On the scalp, that signal is aimed at follicles which are still there but have miniaturised, producing finer, shorter, weaker hairs rather than nothing at all. The treatment delivers the solution by micro-injection, improves blood circulation to the scalp and aims to create a better environment for growth. It strengthens existing hair as well as encouraging new growth, which is why the first change people notice is usually quality rather than quantity.
Who it suits, and who it does not
It suits men and women experiencing hair thinning, early stage hair loss, or who want to improve density and quality, and it is most effective when it is started early in the process. Thinning that has been developing for a year or two is a far better candidate than thinning you have watched for a decade.
The limit is firm and worth stating plainly: it will not work where an area is genuinely bald. The treatment stimulates follicles that have miniaturised, and where the follicles have scarred over there is nothing left to stimulate, so a surgical option is the right conversation instead. A scalp analysis at consultation is what separates the two, and it is the reason the assessment comes first rather than the booking.
What a session involves
A session runs 45 to 60 minutes. It begins with a detailed scalp analysis and consultation, then the scalp is cleansed and prepared, the exosome solution is applied and delivered by micro-injection, and the scalp is massaged to help absorption. You leave with aftercare guidance and a treatment plan.
The injections are very superficial and most people find them easily tolerable. Topical numbing can be applied first if you would prefer. The scalp usually feels tender for a few hours afterwards, and there is no lasting discomfort.
The course, and the timeline
A course is normally three sessions spaced about four weeks apart. This is not a single-session treatment, and the figure worth planning around is the course rather than the first appointment.
| When | What to expect |
|---|---|
| First few hours after a session | The scalp may be pink and tender. No meaningful downtime beyond that |
| First 24 hours | No hair washing or styling products, no strenuous exercise, saunas, steam rooms or swimming |
| About a week | Leave colouring and chemical treatments until after this point |
| Four to six weeks | Initial improvements in hair quality may be noticed. The next session falls around here |
| Three to six months | Visible new growth typically becomes apparent, with continued improvement after that |
What happens after the course is decided at review, judged against the photographs taken at your first appointment rather than set in advance. Some people maintain with an occasional single session; others do not need more for a long period.
Exosomes, PRP or polynucleotides
Three regenerative routes are used for the same concern, and they are different propositions rather than better and worse versions of one treatment. Exosome therapy delivers a more concentrated dose of growth factors than PRP, and many people find it more effective for hair regeneration. PRP uses your own blood, drawn and processed on the day, so it involves a blood draw that exosome treatment does not. Polynucleotides are a third option, and we have written about polynucleotides against PRP for hair loss separately.
Which belongs in your plan is a scalp assessment question. The wider view of what is available without surgery is in our guide to hair restoration without surgery, and the clinic's full range sits on the hair treatments page.
What to bring to the consultation
Two things make the assessment more useful. The first is a sense of the timeline: roughly when you first noticed the change, and whether it has been gradual or stepped. The second is any photographs you already have of your hair from a year or more ago, because the comparison that matters is against your own scalp rather than against anybody else's.
The consultation itself includes the scalp analysis, and the photographs taken there become the baseline every later review is measured against. Nothing is agreed on the day without the cost of the full course being set out first.
Where to go next
The full treatment detail, the current price and the booking route are on the exosome hair regeneration page. If hair loss is the concern rather than a particular treatment, the hair loss page sets out every route the clinic offers for it. The clinic is at 4 Baker Street in Marylebone, and a consultation can be booked online or discussed on WhatsApp.
Questions people ask
What does exosome hair treatment actually do?
Exosomes are tiny membrane bound packages that cells release to communicate with one another. They are not cells and they are not drugs. Each one carries a cargo of growth factors, proteins and signalling molecules, and delivering them into the scalp is a way of signalling to follicles that have miniaturised: repair, divide, increase blood supply. The aim is to stimulate dormant follicles, improve circulation to the scalp and create a better environment for growth.
Who is suitable for exosome hair treatment?
It suits men and women with hair thinning, early stage hair loss, or who want to improve hair density and quality, and it is most effective when started early in the process. It will not work on an area that is genuinely bald: the treatment stimulates follicles that are still present but have miniaturised, and where the follicles have scarred over there is nothing left to stimulate, so a surgical route is the realistic answer there.
How many sessions will I need, and how much does it cost?
A course is normally three sessions spaced about four weeks apart. Exosome hair treatment at Mesglo starts from £650 a session, and the fee covers the scalp analysis, the solution, the treatment, your photographs and the review. The full cost of your course is confirmed at consultation before anything is agreed. What happens after the course is judged at review against your starting photographs rather than set in advance.
How long before I see anything?
Initial improvements in hair quality may be noticed within four to six weeks. Visible new growth typically takes three to six months, with continued improvement after that. Each session takes 45 to 60 minutes.
Does it hurt, and is there downtime?
The injections are very superficial and most people find it easily tolerable, with topical numbing available for the scalp first if you would prefer. There is no meaningful downtime. The scalp may be pink and tender for a few hours. Do not wash your hair or use styling products for 24 hours, and avoid strenuous exercise, saunas, steam rooms and swimming for the same period. Leave colouring or chemical treatments for about a week.
How does exosome therapy compare with PRP for hair?
Exosome therapy delivers a more concentrated dose of growth factors than PRP, and many people find it more effective for hair regeneration. PRP uses your own blood, drawn and processed on the day; exosomes arrive as a prepared solution, so there is no blood draw. Which one suits you is a scalp assessment question, not a ranking, and polynucleotides are a third option for the same concern.
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Talk it through with Rahena
A consultation at 4 Baker Street comes first in every case. Rahena assesses your skin or hair, explains what would and would not help, and there is no obligation to go ahead.