Exosomes Explained: What They Are, What's Legal in the UK, and Why I Use Purasomes
Exosomes are one of the most talked about words in aesthetics right now, and also one of the most misused. Patients ask me about "exosome facials" they have seen advertised, sometimes with no explanation of where the product actually comes from or how it is applied. As an NHS GP and aesthetic doctor in Hale, I want to explain what exosomes actually are, what the evidence currently shows, and a question that matters more than most patients realise: is what you are being offered even legal in the UK.
In this article:
- What Are Exosomes?
- What Does the Evidence Show?
- The UK Legal Picture: Topical vs Injected
- Why I Use Purasomes
- What Can Exosomes Help With?
- Is It Safe?
- Who Are Exosomes For?
- The Bottom Line
What Are Exosomes?
Exosomes are tiny extracellular vesicles, roughly 30 to 150 nanometres across, released naturally by cells. Think of them as microscopic delivery parcels, carrying proteins, lipids and genetic signals between cells. They play a genuine role in inflammation, tissue repair and matrix regulation throughout the body, which is why researchers across dermatology, wound care and regenerative medicine have become interested in them.
The important thing to understand is that "exosomes" is a description of a type of particle, not a single product. Exosomes can be derived from human cells, animal cells or plants, and can be applied to the body in very different ways. Those two variables, source and delivery method, are what actually determine whether a treatment is safe, evidenced and legal, far more than the word "exosome" on a treatment menu.
What Does the Evidence Show?
Current research on exosomes in skin rejuvenation is genuinely encouraging, though still developing. Systematic reviews have found consistent improvements in skin elasticity, hydration and wrinkle depth, with molecular evidence showing increased collagen and elastin synthesis in treated skin. Exosomes also appear to support wound healing and calm inflammation, which is part of why they are often paired with procedures that briefly disrupt the skin barrier.
The evidence is promising rather than settled, which is exactly why the source and safety profile of the product matter as much as the results it promises.
Most published studies are still early stage, with varied products, dosing and outcome measures. That is a normal part of any emerging treatment area, but it is also why I only use products with real manufacturing transparency and a clear safety record, rather than choosing based on marketing claims alone.
The UK Legal Picture: Topical vs Injected
This is the part most patients are never told, and it matters more than any ingredient list. The MHRA, the UK's medicines regulator, treats injected exosomes as medicinal products. That means injecting exosomes, whether into the skin, under the skin, or into a vein, is not currently permitted for aesthetic use in the UK, regardless of where the exosomes came from.
Separately, exosomes derived from human tissue are banned for cosmetic use in the UK entirely, due to safety, disease transmission and ethical sourcing concerns. If a clinic describes their product as human derived or as "stem cell exosomes from donor tissue", that is not a legal cosmetic treatment.
| Method | UK Legal Status for Cosmetic Use | Notes |
|---|---|---|
| Topical application after a channel-creating treatment (microneedling, laser or radiofrequency) | Permitted, using non-human-derived product | Currently the only lawful cosmetic route |
| Injection, intradermal, subcutaneous or intravenous | Not permitted for cosmetic use | MHRA classifies injected exosomes as medicinal products |
| Human-derived exosomes, by any method | Banned for cosmetic use | Applies regardless of delivery method |
If you are ever considering an exosome treatment, three questions are worth asking before you book: what is the source of the product, is it applied topically or injected, and can the clinic show you product documentation. A clinic confident in what it is offering will answer all three without hesitation.
Why I Use Purasomes
In my clinic, I use Purasomes, made by the Italian company Dermoaroma. Purasomes are derived from organic bovine colostrum, the nutrient-rich first milk produced by cows, rather than from human tissue, which is part of why they can be legally and ethically used in UK aesthetic practice. Dermoaroma collect the colostrum only after calves have received their share, and it goes through a patented purification process called AMPLEX Plus to isolate the exosomes and remove unwanted proteins and impurities.
Each treatment I use contains roughly 10 billion purified exosomes alongside 20 growth factors, including cytokines and signalling proteins that support cellular activity and collagen production. In my clinic, Purasomes is always applied topically, immediately after a treatment such as medical microneedling that temporarily opens the skin's surface, never injected. If you want the full detail on how that combination works in practice, I have written a separate guide to microneedling with exosomes.
What Can Exosomes Help With?
| Concern | How Exosomes May Help |
|---|---|
| Dull, tired looking skin | Supports cellular repair and radiance from within |
| Fine lines and early ageing | Encourages collagen and elastin synthesis |
| Post-procedure downtime, such as after microneedling or laser | Supports faster, calmer healing and reduced inflammation |
| Acne scarring and uneven texture | Assists tissue remodelling in the treated area |
| Pigmentation and uneven tone | Early evidence suggests a modulating effect on pigment producing cells |
Is It Safe?
Topical, non-human-derived exosome products such as Purasomes have a favourable safety profile in published data, and applying them topically avoids the additional risks that come with injecting any biological product. As with any treatment that follows microneedling or laser, mild redness or flaking for a few days is normal. Choosing a doctor led clinic that can show you exactly what product you are receiving and how it is sourced remains the most important safety step, more so than any single ingredient.
Who Are Exosomes For?
If You Want Support for Skin Repair and Regeneration
Patients who want to support their skin's own repair processes, rather than add volume or relax muscle movement, are often good candidates for topical exosome treatment.
If You're Considering an "Exosome Facial" Anywhere
Before booking, it is worth checking whether the product is injected or topical, and whether it is human or non-human derived. That single question tells you more about safety and legality than the price or the marketing.
If You Care About Where Your Treatment Comes From
Patients who want full transparency on sourcing and manufacturing, not just a results promise, tend to value the level of detail I give about Purasomes specifically.
The Bottom Line
Exosomes are a genuinely promising area of regenerative skincare, but the science is still developing, and the word "exosome" alone tells you nothing about whether a treatment is safe or legal. What matters is the source and the delivery method. In my clinic, that means topical, bovine-derived Purasomes, applied after a channel-creating treatment such as microneedling, never injected. As with any aesthetic treatment, I always start with a full consultation to make sure it is the right fit for your skin and goals.
Further Reading
- Should You Bleed During Microneedling? What the Latest Evidence Actually Shows
- The Ultimate Guide to Microneedling with Exosomes
- Why I Believe Microneedling with Exosomes Is Better Than PRP
- Why Collagen Declines, and the Treatments That Actually Stimulate It
- Medical Microneedling in Hale, Altrincham, Treatment Page
References
- Exosomes in Aesthetic Medicine: An Overview. Aesthetic Surgery Journal, 2026.
- Exosomes in Skin Rejuvenation: Systematic Review of Anti-Aging Effects and Clinical Applications. PMC.
- Exosome Therapy in the UK: Patient Safety Warning on New Injectables. Save Face.
