14 July 2026
Exosomes are tiny particles released by cells that carry signalling molecules, and in aesthetics they are usually applied to the skin after microneedling or a laser to support recovery. The evidence is still early: small studies suggest possible improvements in texture and hydration, but large, long-term trials are lacking. Regulators including the UK MHRA and the US FDA have not approved exosome products for aesthetic use, and injecting them is not permitted in the UK. This article explains the basics so you can discuss them with a qualified clinician.
What are exosomes and where do they come from
Exosomes are extracellular vesicles, very small particles roughly 30 to 150 nanometres across, that cells release to communicate with one another. They carry cargo such as proteins, lipids and RNA (including messenger and micro RNA) that can influence how nearby cells behave. In aesthetics, the exosomes used are often derived from cultured stem cells or, in some products, from plants, and they are studied for their role in signalling linked to skin repair.
How exosomes are used with microneedling
In clinics, exosome formulations are most often applied to the skin surface immediately after a procedure that creates tiny channels or heat, such as microneedling or a fractional laser. The idea is that these micro injuries give the topical product a route into the upper skin and coincide with the skin's natural repair response. Exosomes are usually positioned as an adjunct to a device treatment rather than a standalone therapy, and what is offered varies widely between clinics. It is worth asking exactly what product is being used and how.
What the current evidence does and does not show
The current evidence is early and limited. Small split-face studies, where one side of the face is treated and compared with the other, have reported improvements in skin texture, hydration and the look of pigmentation when exosomes were paired with microneedling or laser, often without serious side effects during short follow-up. However, these studies are small, methods and products differ, and there are no large, long-term randomised trials that confirm a clear benefit. Commercial marketing has moved faster than the science, so claims should be read with care.
Regulation and safety: what to check before booking
No exosome product is currently approved for aesthetic use by the UK MHRA or the US FDA. In the UK, the MHRA treats injected exosomes as medicinal products with no authorisation, and injecting them is not permitted; they may only be applied topically. The FDA has issued warning letters to several companies marketing exosome products as unapproved drugs, and a published case series has described adverse reactions after intradermal injection. Because sourcing, purity and legal status can be unclear, a consultation with a qualified, regulated practitioner is the right place to ask about the specific product and how it would be used.
Common questions
- Are exosome treatments approved for use in aesthetics?
- No exosome product is approved for aesthetic use by the UK MHRA or the US FDA at the time of writing. Topical use alongside microneedling sits in a regulatory grey area, while injecting exosomes is not permitted in the UK. A regulated clinician can explain the current status for your situation.
- Do exosomes work for skin rejuvenation?
- The honest answer is that it is too early to say with confidence. Some small studies suggest possible improvements in texture and hydration when exosomes are combined with microneedling, but the evidence is limited and long-term trials are lacking. Individual results cannot be guaranteed.
- Can exosomes be injected into the skin?
- In the UK, injecting exosomes is not permitted, and regulators treat injectable exosomes as unauthorised medicinal products. Where exosomes are used in aesthetics, they are applied topically, usually after microneedling. Always discuss any procedure with a qualified practitioner first.