Exosomes vs PDRN: What's the Difference in Skincare?

Exosomes and PDRN are both sold as serum ingredients that "repair" skin, but they are not the same. Exosomes are tiny packets that cells release. PDRN is a mix of DNA bits, often from salmon or trout. Here is what each is, what the studies show, and what to check before you use one with micro infusion or microneedling.

Key points

• Exosomes are tiny sacs, 30 to 150 nm wide, that carry proteins, fats and genetic material from cell to cell¹.
• PDRN (polydeoxyribonucleotide) is a mix of DNA fragments. Studies use it to calm swelling and help tissue heal³.
• PDRN does not contain exosomes. They are two separate things^1,3.
• The FDA says "There are currently no FDA-approved exosome products"⁸.
• We found no study that tests the two serums against each other in people (PubMed, 24 Oct 2026).
• Most of the proof for both comes from lab dishes, animals, wound care or shots, not from home serums.

What is the difference between exosomes and PDRN?

Exosomes are tiny packets that cells use to send signals to each other¹. In skincare they come from cells such as stem cells or blood platelets. A 2023 review says the field is "still in its infancy"². The main problems it names are how exosomes are cleaned, stored and made the same way each time².

PDRN is DNA broken into small bits³. It most often comes from fish such as salmon or trout⁶. Some brands now sell plant versions. A 2021 review looked at 25 years of papers⁴. It says PDRN has been used to help wounds heal, put on the skin or given as a shot⁴.

Prices in USD on 24 Oct 2026^10,12,14.

What does the research show?

Exosomes. A 2025 review in the Journal of Drugs in Dermatology looked at 56 papers from 2014 to 2024¹. It sees promise for aging skin and hair loss. It also says sources vary, methods are not the same, and trials are still needed to test long-term safety¹. The 2023 review says exosomes on the skin are "generally considered safe in humans on intact skin"². It adds that there is no clear agreement yet on long-term use².

PDRN. The 2021 review says PDRN shows "encouraging results" for how fast wounds heal⁴. That comes from lab, animal and patient studies. A 2023 study in human skin cells found PDRN raised collagen and lowered swelling signals³. Results in a dish do not show what a serum does on a face.

Head to head. We found no human study that compares the two on the skin (PubMed, 24 Oct 2026). The closest is a 2026 study in 168 hamsters⁵. Each group of 24 got one agent by shot under the skin, for up to 14 days. Two control groups got nothing or salt water⁵. All the active shots raised collagen more than the controls⁵. PDRN did better than fat stem cell exosomes, and a mix of agents did best⁵. These were shots in hamsters, so they say little about serums on people.

A 2026 lab study put trout PDRN inside exosomes⁶. In cell tests, wounds closed faster than with either one alone. The authors say "clinical trials are needed"⁶.

Are exosomes and PDRN safe to use with microneedling?

We found no study of either serum on freshly needled skin at home. One case report is a warning for any serum used with needles. It describes 3 women who got lumps on the face, called granulomas, after microneedling with a serum⁷. The authors say a product put on before needling can push particles deep into the skin and cause a reaction⁷. Use only products made and packed for needling. See how often to use micro infusion for spacing.

In 2019 the FDA warned of "serious adverse events" in patients in Nebraska⁹. They were treated with unapproved products sold as having exosomes. Those were clinic treatments, not face serums. The FDA says exosome products meant to treat a disease need FDA approval⁸. We found no FDA page for shoppers about exosome face serums (searched fda.gov, 24 Oct 2026).

Product rules also differ. One PDRN serum page says "Do not use with a beauty device", and names heat, light and LED masks¹⁴. If you also use light, read our guide on LED masks after microneedling.

What do exosome and PDRN serums cost?

These are examples of what is sold, not picks. No brand says how many uses a bottle gives, so we show price per mL, not per session. They are listed A to Z.

Prices in USD on 24 Oct 2026, one-time purchase^10,12,14. Sums: $24 / 30 = $0.80; $258 / 15 = $17.20; $44.54 / 50 = $0.89. Returns from each brand's policy^11,13,15.

Brand claims to read with care:

• The exosome serum's page says it is "Clinically proven to" deliver "2x younger-looking skin", with no study details on the page¹². The page says "Apply once daily" in one place and "Once or twice daily" in its routine steps¹².
• The salmon PDRN serum's page suggests pairing it with the same brand's "Zero Exosome Shot"¹⁰. It does not state a PDRN percentage.
• The ginseng PDRN serum's page says its tingling is "completely normal and indicates skin improvement" and credits "micro-sized silica"¹⁴.

When should you see a dermatologist?

See a dermatologist before you put any serum on needled skin if you have a skin condition, acne or an infection. Do the same if skincare has ever caused an allergic reaction. Stop and get checked if you notice lumps, swelling, spreading redness or pain that lasts⁷. Before a clinic exosome treatment, ask what the product is and who regulates it⁸.

For kits that include a serum, see our guide to the best micro infusion systems.

Last checked 24 Oct 2026.