PRP or Exosomes for Hair Loss? Dr Yasmin Tayeb Explains the Difference

PRP or Exosomes for Hair Loss? I Explain the Difference

Thinning hair rarely announces itself. It creeps in. A part line that looks a little wider in photos, a ponytail that feels thinner in the hand, more strands than usual collected in the plughole. By the time most people book a consultation, they have already spent months quietly worrying about it. The good news is that there are now serious, evidence-led treatments that work with your own biology to wake up sluggish follicles, and two of the most talked about are PRP and exosomes.

In a recent reel, I was asked the question I hear in the clinic almost every week. What is the difference between hair rejuvenation with PRP and hair rejuvenation with exosomes, and how do I decide which one a patient actually needs? Both use growth factors to stimulate the hair follicle and encourage stronger, thicker hair. The interesting part is not what they have in common. It is why I might steer one patient towards their own blood and another towards a laboratory-derived treatment.

This article walks through how each option works, what a session at Wellface involves, who tends to suit which approach, and what you can realistically expect. If you have tried something before and felt underwhelmed, or you are weighing up a hair transplant and wondering whether there is a gentler step to try first, this is worth reading properly.

How growth factors regrow hair

To understand PRP and exosomes, it helps to know what is going on at the level of the follicle. Hair grows in cycles. There is a long growth phase, a short transition phase, and a resting phase where the follicle sits idle before the hair sheds. In conditions like androgenetic thinning, more follicles get stuck in the resting state, the growth phase shortens, and the hairs that do grow come through finer and weaker with each cycle. Over time the follicle can miniaturise until it produces little more than fine, colourless fluff.

Growth factors are the signalling molecules that tell cells what to do. In the scalp, the right signals can nudge resting follicles back into the growth phase, improve the blood supply feeding each follicle, and support the stem cells that keep the whole cycle turning. Both PRP and exosome therapy are ways of delivering a concentrated dose of these signals directly to where they are needed. Neither is a drug, and neither works overnight. They are regenerative treatments, which means they coax your own tissue into behaving more like it did a few years ago.

The distinction I draw comes down to where those growth factors come from and, crucially, how reliable the dose is. That single idea shapes the whole conversation.

PRP: harnessing your own blood

PRP stands for platelet-rich plasma. It is one of the most established regenerative treatments in aesthetics, and it uses nothing but your own blood.

What actually happens in a PRP session

A small sample of blood is drawn from your arm, much like a routine blood test. That sample goes into a centrifuge, which spins at high speed to separate the components by weight. The platelets, which are packed with growth factors, concentrate into a golden layer of plasma. That plasma is drawn off and then delivered back into the scalp, either through a series of fine injections across the thinning areas or combined with microneedling to drive it into the upper layers of the skin.

Start to finish, a session usually takes somewhere between thirty and sixty minutes, most of which is preparation. The scalp can be numbed with topical anaesthetic to keep things comfortable, and most people describe the sensation as small pinpricks rather than anything painful. Afterwards you might have some tenderness, mild redness or a little swelling, but there is no real downtime. Most patients head straight back to their day.

Why I reach for PRP

Because PRP is made from your own blood, its quality depends entirely on you. This is the point I make clearly. My ideal PRP candidate is someone young, fit and healthy. A professional athlete, perhaps, or simply a person who does not smoke, drinks little to no alcohol, takes no regular medication and generally lives well. From that kind of patient I expect good quality blood and a strong natural healing capacity, which is exactly what makes PRP effective.

The honest caveat is that even with a perfect candidate, nobody can guarantee the growth factor dose inside a given sample of blood. You are working with whatever your body produces on the day. For a healthy patient that is usually plenty. For someone whose biology is already under strain, the results can be less predictable, and that is where the second option comes in.

Exosomes: a known dose of signalling power

Exosomes are tiny vesicles, essentially miniature packages released by cells to carry messages to other cells. They are the postal service of the body, ferrying proteins, growth factors and genetic signalling material from one place to another. In a hair treatment, exosomes are derived and purified in a laboratory, then applied to the scalp to deliver a large, consistent payload of regenerative signals.

The number I quote is striking. The exosome product we use at Wellface is loaded with billions of growth factors, which means the dose is known and standardised rather than left to chance. This is the fundamental advantage over PRP. You are not hoping the patient's own blood is rich enough. You are delivering a measured, high-potency dose every single time.

Who exosomes suit best

I tend to recommend exosomes for patients who fall outside that pristine PRP profile. Someone a little older. Someone whose medical history is not perfect, whose healing capacity may have slowed, or whose lifestyle sits outside the very healthy bracket that makes PRP shine. For these patients, relying on their own blood might not produce the concentration of growth factors needed for a strong result. Exosomes sidestep that problem entirely because the potency does not depend on the individual.

I am candid that I trialled several different exosome products before settling on the one we now use in clinic. That matters. The exosome market has grown quickly and the quality varies enormously, so the choice of product is not a detail. Having tested multiple versions, I have seen consistent results and strong feedback from patients with the one we now offer, which is why I am confident recommending it.

What a session involves

An exosome treatment is typically delivered by microneedling the solution into the scalp, or by injection, depending on the plan. The microneedling channels help the exosomes penetrate to the level of the follicle while also creating a controlled micro-injury that itself triggers a healing response. Sessions are quick, often in the region of fifteen minutes to an hour, and because there is no blood draw or centrifuge step, the process is slightly more straightforward than PRP. Recovery is much the same, a little redness or mild swelling that settles within a day or two.

How to choose between them

Neither treatment is universally better. The right answer is the one that matches the patient in front of you, which is precisely why I insist on a proper consultation before recommending either.

As a broad rule of thumb, PRP is a natural, cost-effective and well-proven choice for younger, healthy patients whose blood is likely to be rich in growth factors. Exosomes come into their own where PRP results might be unreliable, where a patient is older or less well, or where someone has tried PRP already and been disappointed. Because exosome potency is standardised, it also tends to require fewer sessions to reach a comparable result, which some patients value.

I often frame exosomes as a genuine alternative for the person who has run out of patience with other options but is not ready to commit to surgery. If you have been staring at hair transplant clinics wondering whether there is something to try first, a regenerative treatment is exactly the kind of step that belongs before that decision, not after it.

For some patients the two are not mutually exclusive at all. A treatment plan might combine regenerative therapy with medical-grade topical support and lifestyle changes, because hair thinning usually has more than one driver. That fuller picture is what the consultation is for.

What results look like and how to protect them

Regenerative hair treatments ask for a little patience. Because they work by shifting follicles back into the growth phase, you are waiting on the natural hair cycle to catch up. Most people start to notice reduced shedding first, then gradually improved density and texture over the following months. Visible change typically builds across a course of sessions rather than appearing after a single visit, and results are maintained with periodic top-up treatments.

Aftercare is refreshingly simple. Keep the scalp clean and avoid harsh products, vigorous scrubbing, swimming pools and saunas for a day or two while any redness settles. Steer clear of intense heat styling immediately afterwards. Beyond that, the habits that support your general health support your hair too. Good sleep, balanced nutrition with enough protein and iron, managing stress, and not smoking all help the follicles do their work. I will tailor the specifics to you, particularly if there is an underlying cause worth addressing.

Common questions about PRP and exosomes for hair

Is one treatment safer than the other?

Both have strong safety profiles when performed by a qualified medical practitioner. PRP uses your own blood, so there is essentially no risk of an allergic reaction to the product itself. Exosomes are purified and standardised, and the product we use at Wellface was chosen after careful trialling. As with any injectable or microneedling treatment, the main considerations are mild, short-lived effects like redness, tenderness or swelling.

Does it hurt?

Most patients find both treatments very tolerable. The scalp can be numbed with topical anaesthetic beforehand, and the sensation is usually described as small pinpricks or a light scratching during microneedling. Any discomfort tends to fade quickly once the session is over.

How many sessions will I need?

That depends on the treatment chosen and the degree of thinning. PRP is generally delivered as a course spaced a few weeks apart, followed by maintenance. Exosomes, being higher in potency, may achieve comparable results in fewer sessions. I will map out a realistic schedule at your consultation rather than promising a fixed number.

Can I have these treatments if I am already using hair loss medication?

Often yes, and the two can complement each other. Regenerative treatments and topical or oral therapies work in different ways, so combining them can make sense. Always tell me about any medication or medical conditions so the plan can be adjusted appropriately.

Are the results permanent?

No hair treatment permanently freezes the ageing process of the follicle. Both PRP and exosomes stimulate improvement that is then maintained with periodic sessions. Think of it as ongoing care rather than a one-off fix, in the same way you would maintain any result you value.

Talk it through with me at Wellface

The honest truth about hair rejuvenation is that the choice between PRP and exosomes is not something to make from a caption or an article. It is a clinical decision that depends on your age, your health, your history and what you are hoping to achieve, which is why I start every case with a proper conversation and an assessment of your scalp.

If your hair has been on your mind, or you have tried something before that did not deliver, come and sit down with me. We have clinics in Cobham, Esher and Wimbledon, and I would rather help you find the right treatment than sell you the popular one. Book a consultation with me and let me take a proper look at what is going on and what might genuinely help.