Evidence guide
What exosomes are, what they are used for in skin and hair, and what the evidence shows.
Written by Orr Shauly, MD, plastic surgery resident. Updated .
For information and education only, not medical advice.
The short answer.
Exosomes are tiny packages released by cells that carry proteins, fats and genetic signals to other cells. In aesthetic medicine they are applied to the skin, often after microneedling or laser treatment, to support skin repair and hair growth. A 2026 meta-analysis of 39 human studies found that facial wrinkles improved by about 20% and hair density by about 24%, although the studies varied widely in design and quality.1 There are currently no FDA-approved exosome products.2
- 39 Studies
- human trials pooled
- Human studies of exosomes for skin or hair included in a 2026 systematic review and meta-analysis.1
- 20.2%
- fewer facial wrinkles
- Average improvement in facial wrinkles across the skin studies in that meta-analysis.1
- 23.6%
- greater hair density
- Average improvement in hair density across the hair studies in that meta-analysis.1
What exosomes are.
Exosomes are extracellular vesicles, very small bubbles about 30 - 150 nanometres across that cells release to communicate with each other.4 They carry proteins, lipids and genetic material such as RNA, and can change how nearby cells behave.5
Exosomes are not cells, and they do not contain living stem cells. Products studied in aesthetics come from sources such as fat-derived stem cells, fibroblasts or platelets, and are usually separated from the fluid around cells grown in a laboratory, leaving the cells behind.5Because exosomes can come from many sources and are made in different ways, two products sold under the same name may be very different.4
How exosomes are thought to work.
In laboratory and animal studies, exosomes increased collagen production, sped up wound healing and calmed inflammation, effects that could in theory improve wrinkles, texture and scars.5 In hair, exosomes may influence the hair growth cycle, and laboratory studies of exosomes from fat-derived stem cells and hair follicle cells have shown early promise.6
A practical challenge is getting exosomes into the skin. The outer layer of skin is a strong barrier, which is why exosomes are often applied right after microneedling or laser treatment, when tiny channels are open.5
What exosomes are used for.
- Skin Aging: Exosomes are applied after microneedling or laser to improve wrinkles, elasticity, texture and tone.7
- Acne Scars: Exosome gel has been used after fractional CO2 laser to improve scars and shorten recovery.8
- Surgical Scars: Small studies have tested exosomes to improve the color and softness of healing scars.9
- Hair Loss: Exosomes are applied to the scalp, often with microneedling, for pattern hair loss.6
The evidence at a glance.
| Study | Design | Patients | Indication | Main Finding |
|---|---|---|---|---|
| Meta-Analysis 20261 | Systematic Review, Meta-Analysis | 39 studies | Skin, Hair | Wrinkles 20.2% better, hair density 23.6% better, with widely varying protocols |
| Systematic Review 20267 | Systematic Review | 21 studies | Skin Aging | Improved elasticity, wrinkle depth and hydration, with few side effects |
| Acne Scar Trial 20208 | Randomized Split-Face | 25 | Acne Scars After CO2 Laser | Scar scores 32.5% vs 19.9% better on the exosome side |
| Microneedling Trial 202310 | Randomized Split-Face | 28 | Facial Aging | Greater improvement in wrinkles, elasticity and pigmentation vs saline |
| Hair Review 20236 | Systematic Review | 16 studies, 1 in humans | Hair Loss | Higher hair density and thickness in 39 patients, mostly animal data |
| Topical Review 20245 | Systematic Review | 9 exosome studies | Topical Skin Use | Faster wound healing and more collagen, with no products FDA approved |
Regulation and safety warnings.
In the United States, exosome products intended to treat a disease or condition are regulated as drugs and biological products and require FDA approval. There are currently no FDA-approved exosome products.3
In December 2019, the FDA warned the public after patients in Nebraska had serious adverse events following treatment with unapproved products marketed as containing exosomes.2 The agency has also cautioned that some clinics make unsupported claims about exosome and stem cell products.3
Many skincare products marketed as containing exosomes are sold as cosmetics. Their source, purity and dose are often not disclosed, and standards for making and testing exosomes are still being developed.4
Side effects.
In published clinical studies, side effects were uncommon and mild, such as temporary redness, and no serious adverse events were reported.7,10 In one acne scar trial, redness after laser treatment was milder and recovery was shorter on the side treated with exosomes.8
Most of the side effects people experience come from the procedure the exosomes are paired with, such as microneedling or laser treatment, rather than from the exosomes themselves.
What we don't know yet.
- Standardization: There is no agreed way to make, measure or dose exosome products.4
- Long-Term Safety: Most studies follow patients for weeks to a few months.7
- Product Differences: Results from one source, such as fat-derived stem cells, may not apply to another, such as platelets or plants.1
- Hair Evidence: Most hair research has been done in animals or the laboratory, with few human trials.6
Common questions.
Are exosomes the same as stem cells?
No. Exosomes are tiny packages released by cells, and they contain no living cells. Many aesthetic products are made from stem cells grown in a laboratory, but the cells are removed.
Are exosomes FDA approved?
No exosome product is FDA approved to treat any disease or condition. Some skincare products containing exosomes are sold as cosmetics, which do not go through the same approval process.
Do exosomes work for wrinkles?
Early studies show improvements in wrinkles, elasticity and texture, especially when exosomes are used after microneedling or laser treatment. Most studies are small and short term, so the size and durability of the benefit are still uncertain.
Can exosomes help hair loss?
Early human studies report greater hair density and thickness, but most of the research has been done in animals. Proven treatments for pattern hair loss should usually be discussed first.
Why are exosomes used with microneedling?
The outer layer of skin is a strong barrier. Microneedling and laser treatment create tiny channels that may help exosomes reach deeper layers of the skin.
Are exosomes safe?
Published clinical studies report few and mild side effects. The FDA has warned about serious adverse events from unapproved products, so the source and quality of a product matter.
How long do results last?
This is not yet known. Most studies follow patients for a few weeks to a few months.
Are exosomes right for me?
Only an in-person evaluation can answer that. This guide is educational and cannot assess an individual case. A qualified plastic surgeon or dermatologist can review your goals, skin and options with you.
Key terms.
- Exosome
- A very small vesicle released by cells that carries proteins, fats and genetic material to other cells.
- Extracellular Vesicle
- The broader family of membrane bubbles released by cells, which includes exosomes.
- Microneedling
- A procedure that uses fine needles to create tiny channels in the skin and stimulate repair.
- Adipose-Derived Stem Cells
- Stem-like cells from fat tissue that are a common source of exosomes used in aesthetics.
- Androgenetic Alopecia
- Pattern hair loss in men and women, the most common type of hair loss.
Research by Dr. Shauly on this topic.
References.
- 1.Stack ER, Spongberg C, Braud SC, Stanton WN, Elway M. Clinical Advances in Exosome-Based Therapies for Aesthetic Medicine: A Systematic Review and Meta-analysis of Human Clinical Trials. Aesthet Surg J. 2026;46(12 Suppl 2):S13-S25. PubMed
- 2.US Food and Drug Administration. Public safety notification on exosome products [Internet]. Silver Spring (MD): FDA; 2019 Dec 6 [cited 2026 Oct 20]. Available online
- 3.US Food and Drug Administration. Consumer alert on regenerative medicine products including stem cells and exosomes [Internet]. Silver Spring (MD): FDA; 2020 Jul 22 [cited 2026 Oct 20]. Available online
- 4.Haykal D, Wyles S, Garibyan L, Cartier H, Gold M. Exosomes in Cosmetic Dermatology: A Review of Benefits and Challenges. J Drugs Dermatol. 2025;24(1):12-8. PubMed
- 5.Ash M, Zibitt M, Shauly O, Menon A, Losken A, Gould D. The Innovative and Evolving Landscape of Topical Exosome and Peptide Therapies: A Systematic Review of the Available Literature. Aesthet Surg J Open Forum. 2024;6:ojae017. PubMed
- 6.Gupta AK, Wang T, Rapaport JA. Systematic review of exosome treatment in hair restoration: Preliminary evidence, safety, and future directions. J Cosmet Dermatol. 2023;22(9):2424-33. PubMed
- 7.Alzahrani A, Alghamdi S, Alahmadi M, Alhussaini S, Alamry L, Alrashoud J, et al. Exosomes in Skin Rejuvenation: Systematic Review of Anti-Aging Effects and Clinical Applications. Dermatol Pract Concept. 2026;16(1):6462. PubMed
- 8.Kwon HH, Yang SH, Lee J, Park BC, Park KY, Jung JY, et al. Combination Treatment with Human Adipose Tissue Stem Cell-derived Exosomes and Fractional CO2 Laser for Acne Scars: A 12-week Prospective, Double-blind, Randomized, Split-face Study. Acta Derm Venereol. 2020;100(18):adv00310. PubMed
- 9.Jeong KH, Park KY, Jung DW. A Split-Scar Study: Study of Surgical Scar Using Exosomes. J Cosmet Dermatol. 2026;25(3):e70756. PubMed
- 10.Park GH, Kwon HH, Seok J, Yang SH, Lee J, Park BC, et al. Efficacy of combined treatment with human adipose tissue stem cell-derived exosome-containing solution and microneedling for facial skin aging: A 12-week prospective, randomized, split-face study. J Cosmet Dermatol. 2023;22(12):3418-26. PubMed