PRP Vs Exosome Therapy: How They Compare For Hair Loss
Last reviewed on 26 September 2026. We review our treatment guides every six months to keep them accurate.
Key points
Both are "regenerative" scalp treatments. PRP (platelet-rich plasma) and exosome therapy both deliver a concentrated dose of growth factors and other signals into the scalp to try to wake up tired follicles, and both are given as in-clinic injections or micro-needling.
The big difference is the source. PRP is made from a small sample of your own blood, spun in a centrifuge. Exosomes are tiny "messenger" packets that are usually grown in a lab from donor stem cells, so they are not made from your body.
Neither adds hair or treats the cause. Both stimulate follicles that are still there, so they can thicken thinning areas but cannot regrow a truly bald patch, and neither lowers the hormone (DHT) behind male pattern loss.
PRP has far more human evidence. It has been used and studied for years, with mixed but generally encouraging results; exosome therapy is newer and most of its evidence so far is from the laboratory rather than large trials in people.
Exosomes are promising in theory but not standardised or approved. They carry a richer mix of signals and could in principle be made to a consistent recipe, but products vary widely between clinics, the human data are early, and they are not a standardised or formally approved treatment.
Both need repeated sessions and upkeep, and exosome therapy is typically the more expensive of the two.
Which, if either, suits you is best decided with a clinician, and both are usually combined with proven medication or used around a hair transplant rather than instead of them.
PRP and exosome therapy are two of the "regenerative" treatments offered for hair loss, and they are easy to confuse because both involve injecting growth factors into the scalp. The crucial difference is where those growth factors come from: PRP is made from your own blood, while exosomes are tiny signalling packets usually grown in a laboratory. PRP is the more established of the two; exosome therapy is newer, promising in theory, but backed mostly by early evidence.
This guide compares PRP and exosome therapy neutrally: what each is, how they differ, how effective they are, what they cost you in sessions and money, who each suits, and how they fit with other treatments. It is general information and not a substitute for advice from a doctor.
The short answer
PRP and exosome therapy aim to do the same thing, stimulate the follicles you still have with a concentrated dose of growth factors, but they get there differently. PRP is autologous: it is made from a small sample of your own blood, so what goes back in is entirely your own material, and it has the longer track record in people. Exosome therapy is usually cell-free and lab-derived: the exosomes are grown from donor stem cells and carry a richer, more varied mix of signalling molecules, which is promising in theory, but the human evidence is still early and the products are not standardised or approved. So PRP is the safer known quantity, while exosomes are the newer, higher-potential but less proven option.
What is PRP?
PRP, platelet-rich plasma, is made by taking a small sample of your blood and spinning it in a centrifuge to concentrate the platelets, which is then injected into the scalp. As a review of PRP for hair loss describes, its "composition encompasses a rich variety of biological components such as platelets, growth factors, cytokines, and other bioactive proteins", and those growth factors stimulate the dermal papilla cells that drive the hair follicle. The evidence is encouraging but mixed: the review found that "the majority of studies demonstrated that PRP is effective in increasing hair density and thickness in patients with" androgenetic alopecia, while cautioning that "results varied due to differences in preparation protocols, platelet concentration, and delivery methods". Because it is made from your own blood, PRP is autologous, which is one of its main attractions. Our guide on PRP injections for hair loss covers it in detail.
What is exosome therapy?
Exosomes are tiny "messenger" packets that cells use to send signals to one another. In hair treatments they are usually grown in a laboratory from stem cells and then applied to or injected into the scalp to deliver those signals to the follicles. As a review of exosomes in hair loss explains, they are "nanosized extracellular vesicles rich in proteins, nucleic acids, and lipids" that "modulate the hair follicle microenvironment through activation of Wnt/beta-catenin signaling, promotion of angiogenesis, immunomodulation, and prolongation of the anagen phase", the active growth phase of the hair cycle. In other words, exosomes carry a broader and more varied payload of signals than PRP, which is why there is so much interest in them. The catch is that, unlike PRP, they are not made from your own body and the treatment is much newer. Our guide on exosome therapy for hair loss explains it further.
Which is more effective for hair loss?
Honestly, we cannot yet say that one clearly beats the other, because they sit at very different stages of evidence. PRP has been used and studied in people for years, and while the results are variable, the PRP review found that most studies show it improves hair density and thickness in pattern hair loss. Exosome therapy is far earlier: a systematic review of exosome treatment in hair restoration identified only "16 studies (15 preclinical and 1 clinical)", meaning almost all the evidence so far comes from the laboratory rather than from trials in people.
The early human signal is encouraging, though. In that single clinical study, the review noted, "topical ADSC-Exo has been tried successfully in 39 androgenetic alopecia patients demonstrating significant increases in hair density and thickness", and "no significant adverse reactions associated with exosome treatment have been reported thus far". Its overall conclusion is the fair summary of where things stand: "although current clinical evidence supporting the use of exosome treatment is limited, there is a growing body of evidence suggesting its therapeutic potential". So PRP is the more proven of the two today, while exosomes are promising but not yet backed by strong human trials.
PRP vs exosome therapy: how do they compare?
Both aim to stimulate your existing follicles with growth factors, but they differ in some important ways:
Source: PRP is autologous, made from your own blood on the day; exosomes are usually cell-free and grown in a laboratory from donor stem cells, so they do not come from your body.
What is in it: PRP delivers the platelets and growth factors from your blood; exosomes carry a broader, more varied mix of proteins, genetic material and other signalling molecules.
Evidence: PRP has years of human studies (mixed but generally positive); exosome therapy is backed mostly by laboratory work, with only early clinical data in people.
Standardisation and regulation: PRP is a well-established in-clinic procedure; exosome products vary widely between suppliers and clinics, and are not a standardised or formally approved treatment.
Cost: both are given as a course with maintenance top-ups, and exosome therapy is typically the more expensive of the two.
Comfort and side effects: both are minimally invasive; PRP uses your own blood, and early exosome studies have reported no significant adverse reactions, though long-term safety data are still limited.
What neither does: neither adds new hair, restores a bald area, or lowers the hormone that causes male pattern loss, so both are for supporting thinning hair rather than replacing lost hair.
Which is right for you?
If you want the more established option, PRP is the known quantity: it has the longer track record, it is made from your own blood, and it is widely available. If you are drawn to the newer science and are comfortable with a treatment whose human evidence is still building, exosome therapy is the higher-potential but less proven choice, and it usually costs more. Neither, though, suits someone whose loss is advanced or whose follicles are already gone, because both only support hair that is still there.
Because exosome products are not standardised, it matters even more to choose a reputable clinic and to ask exactly what is being used and what evidence supports it. As with any treatment where the science is still developing, keep your expectations realistic and discuss with a clinician whether a regenerative injection is the right step for your pattern of loss at all.
Can they be combined with other treatments?
Yes, and in practice both PRP and exosome therapy are usually part of a wider plan rather than a treatment on their own. Because neither addresses the hormonal cause of male pattern loss, they are often used alongside the medical mainstays, which we compare in our guides on finasteride versus minoxidil and minoxidil. They also sit within the wider set of regenerative options, and our guide on PRP versus PRF compares the two blood-derived injections, while mesotherapy is another injectable approach.
Neither can restore hair that is already gone. Where loss is more advanced, a hair transplant is a separate option that redistributes your own permanent hair, and a regenerative treatment is sometimes used as an add-on around the surgery; our guide on hair transplant versus PRP looks at that. The key point is that PRP and exosome therapy are companions to a treatment plan, not a cure on their own.
The bottom line
PRP and exosome therapy are both regenerative scalp treatments that deliver growth factors to stimulate the follicles you still have, and neither adds hair, restores a bald area, or treats the hormonal cause of hair loss. The key difference is the source: PRP is made from your own blood and has the longer human track record, while exosomes are usually lab-grown, carry a richer mix of signals, and are promising in theory but backed mostly by early evidence, and are not a standardised or approved treatment. Both need repeated sessions, exosome therapy usually costs more, and both are best seen as part of a wider plan.
If you are weighing them up, a clinician can advise which, if either, suits your hair loss, and how it might fit alongside proven medication or a hair transplant. Whichever you consider, keep expectations realistic and pick a reputable provider.
Frequently asked questions
Is exosome therapy better than PRP for hair loss?
Not proven, but promising. Exosomes carry a richer, more varied mix of growth signals than PRP and could in theory be more effective, but the human evidence is still early: a systematic review found only one clinical study of exosomes for hair, against years of research on PRP. So PRP is the more established treatment today, while exosome therapy is the newer, higher-potential option whose case still rests largely on laboratory work rather than large trials in people.
What is the difference between PRP and exosomes?
PRP is made from your own blood, spun in a centrifuge to concentrate the platelets and their growth factors, then injected into the scalp, so it is entirely your own material. Exosomes are tiny signalling packets usually grown in a laboratory from donor stem cells, so they are cell-free and do not come from your body, and they carry a broader mix of proteins and genetic material. In short, PRP is autologous and established; exosomes are lab-derived and newer.
Do PRP or exosomes regrow hair on a bald scalp?
No. Both work by stimulating follicles that are still present but underperforming, so they can thicken thinning areas but cannot grow hair where the follicles have already been lost. Neither will restore a bald or fully receded area; for that, a hair transplant is the only option that adds hair to bare scalp. PRP and exosome therapy are best used for early or diffuse thinning, or as a support around other treatments, rather than as a cure for baldness.
Is exosome therapy safe and approved?
Early studies have reported no significant adverse reactions, but the long-term safety data are still limited, and exosome products for hair are not standardised or formally approved as a treatment: what is used varies widely between suppliers and clinics. That makes it especially important to choose a reputable provider, ask exactly what is being used and what evidence supports it, and treat the therapy as still developing rather than proven. A clinician can help you weigh it up against more established options such as PRP.
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