Conditions / Skin
Exosomes for healing after procedures and wounds
Mixed. A placebo-controlled trial of donor platelet vesicles in healthy volunteers found no faster healing. A tiny pilot using patients’ own serum vesicles on venous leg ulcers reported more healthy granulation tissue. A three-patient case series reported faster recovery after aesthetic procedures.
No exosome product is FDA-approved for this or any other condition.
3 studies, strongest design first
How to read the bars and marks
Bars: how strong the study design is
More filled bars means a design that can tell more reliably whether the treatment caused the result.
- Single case or case seriesOne patient or a handful, described without a comparison. It can raise an idea; it cannot show that a treatment works.
- Study without a control groupA group was treated and followed, but nobody was left untreated for comparison. Improvement may come from time, other care, or the placebo effect.
- Controlled trialTreated patients were compared with a control: placebo, another treatment, or the untreated side of the face. Most exosome trials at this level are small and short.
- Phase 3 resultsA large trial designed to prove a treatment works, the kind regulators usually require. No exosome product has published phase 3 results.
- FDA approvedThe FDA has reviewed the evidence and approved the product for that use. No exosome product is approved for any use.
Marks: what the study found
A solid mark means a benefit over the comparison. Hollow or partly filled marks mean less.
- Better than controlThe treated group did better than the comparison group on the main measures.
- Mixed or short-lived resultSome benefit, but only on some measures, in a subgroup, or for a short time.
- Similar to comparison treatmentAbout the same as another treatment, such as PRP, which may itself be unproven.
- No benefit over controlThe treated group did no better than placebo or the comparison.
- Improvement reported, no control groupPatients improved, but without a comparison group there is no way to tell whether the treatment caused it.
- Safety onlyThe study looked for harms. It was not designed to show whether the treatment works.
- Stopped for a safety eventThe study was halted after a serious problem in a participant.
- No benefit over control
Donor platelet vesicles injected into small skin wounds
Johnson J et al., Journal of Extracellular Vesicles, 2023. 11 healthy volunteers. Made from: donor platelets.
Safe and well tolerated. Wounds healed in about 23 days on average whether they got the vesicles or placebo.
- Better than control
The patient's own serum vesicles for chronic venous leg ulcers
Gibello L et al., Pharmacological Research, 2023. About 5 patients. Made from: patient's own blood serum.
Treated ulcers formed more healthy granulation tissue than sham-treated ulcers: 3 of 5 treated ulcers reached 75–100% granulation, compared with none of the sham-treated ones.
- Improvement reported, no control group
Placental exosomes on the skin for healing after aesthetic procedures
Peredo M, Shivananjappa S, Journal of Drugs in Dermatology, 2024. 3 people. Made from: placenta.
The authors reported faster recovery, with less redness, swelling, and pain, in all three cases.