Exosomes: what they are and what is known about their therapeutic use
Exosomes are tiny vesicles that cells release to communicate with each other. They are being studied as a possible therapy, but today there are no exosome products with broadly approved clinical use.
State of the evidence
Under investigation
Research is active and mostly preclinical. Health authorities have warned about exosome products offered without authorization.
Educational information prepared by Dr. Belinda Martínez, physician and surgeon. Last updated: October 3, 2026. It does not replace an assessment by a doctor.
What are exosomes?
They are very small, membrane-bound extracellular vesicles that carry proteins, lipids and genetic material. Cells use them to send messages to other cells. They are part of a broader group called extracellular vesicles.
Why they interest researchers
They are being studied as possible diagnostic tools (they are present in blood and other fluids) and as therapeutic vehicles. Exosomes from mesenchymal stem cells, for example, are being studied for their effect on inflammation and repair in laboratory models.
Current clinical status
- Most of the work is in the lab or in animals; trials in people are few and small.
- There is no standardized way to produce, characterize or dose them.
- In the United States, the FDA has warned that there are no approved exosome products to treat diseases and that their promotion by clinics can involve risks.
- Cosmetic products that claim to contain exosomes do not consistently show the effects they advertise.
What to ask before accepting a treatment
With any biological therapy, it is worth asking these questions and expecting clear, written answers:
- Does it have health authorization for this use? In Mexico, products and procedures involving human cells are regulated by COFEPRIS; you can ask for proof.
- Are there published studies in people with my condition? What results did they show?
- What are the risks and what conventional alternatives exist?
- Who administers it, with what training and in what facility?
- What is the total cost and what happens if it does not work?
When to see a doctor
Seek medical care soon if you have any of these signs:
- Fever, chills or feeling very unwell after a procedure.
- Spreading redness, warmth, pus or increasing pain at the application site.
- Allergic reaction: hives, swelling of the lips or face, difficulty breathing.
- Severe pain that does not improve or gets worse over the days.
Frequently asked questions
Do exosomes rejuvenate skin or hair?
There are preliminary studies, but not enough evidence to say so. Products advertised for these purposes are not consistently supported.
Are they safe?
It depends on the product and how it is obtained and purified. Because they are neither standardized nor approved, there may be a risk of contamination or reactions, so it is worth verifying authorization and traceability.
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Dr. Belinda Martínez reviews your case at her office in Guadalajara. The assessment is free of charge and does not commit you to any treatment.
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This content is informational and educational; it is not a diagnosis or a treatment recommendation. If you have any symptoms, consult a health professional.