Treatments
Fat stem cells and SVF in Korea: what is taken, what is injected
Fat-derived cell treatments start with a small amount of your own fat, taken by a minor liposuction. The clinic then separates a cell-rich part called the stromal vascular fraction (SVF) and either uses it the same day or freezes it for later. SVF is a mix of cell types, not a pure stem cell product. Before you book, ask whether the cells are used the same day or cultured, how they are stored, and under which Korean approval they are given.
What readers ask
“Is an SVF injection the same as a stem cell injection?”
“A clinic offers to store my fat cells for later. What exactly is stored?”
What is SVF?
SVF, the stromal vascular fraction, is the part of fat tissue left after the fat cells are separated out. It contains several cell types, and it can be used straight away. Fat tissue can also give rise to adipose-derived stromal cells (ADSCs) when the cells are grown in a lab (Bora and Majumdar, Stem Cell Research & Therapy, 2017).
What happens step by step?
- 01
Fat harvest
A small amount of fat is taken, usually from the abdomen or thigh, under local anaesthesia. Ask where it will be taken from and how long it takes.
- 02
SVF separation
The fat is processed to separate the cell-rich fraction. Ask whether this is done inside the clinic or sent to a lab.
- 03
Storage (optional)
Cells can be frozen and kept for later use. Ask who stores them, for how long, and what happens if you do not come back.
- 04
Procedure
The cells are injected into the treatment area. Ask about the route, the area and the number of sessions.
Same-day SVF or cultured cells: why does it matter?
| Same-day SVF | Cultured cells | |
|---|---|---|
| What it is | A mixed cell fraction from your fat, used within the same visit | Cells grown in a lab to increase their number |
| Visits | Usually one | Usually two or more, weeks apart |
| Korean rules | Ask which legal route the clinic uses | Advanced regenerative therapy: designated institutions and approved treatment plans only |
| What to ask | How much fat, and how the fraction is prepared | Which lab, which approval, how long it takes |
Is fat transfer the same thing?
No. Fat transfer, or fat grafting, moves fat to add volume, for example to the face, and is a cosmetic surgery question. Some clinics advertise 'stem cell fat transfer' when SVF is added to grafted fat. Ask which one you are being offered, because recovery and risks differ.
What does research say?
For knee osteoarthritis, a 2025 Cochrane review found that, compared with a placebo injection, stem cell injections may slightly improve pain and function up to six months, based on low-certainty evidence. The reviewers remain uncertain about any effect on the structure of the knee and about long-term safety. Treat any promise of more than that with care.
What about side effects and recovery?
- The harvest site can bruise, swell or be sore for some days. Ask how to care for it.
- Any injection carries a small risk of infection. The Cochrane reviewers note that invasive joint procedures carry a small risk of joint infection.
- Ask what to avoid afterwards, such as heat, alcohol or hard exercise, and who you contact once you are home.
Which questions should you bring?
- Will my cells be used the same day, or cultured? If cultured, under which approval?
- If I store my cells, who keeps them, for how long, and at what yearly cost?
- When stored cells are used again, are they processed or cultured first?
- Where will the fat be taken from, and what anaesthesia is used?
- What are the risks for me, and what are the alternatives?
- What does the written quote include: harvest, processing, storage, each injection and follow-up?
COMEDI works with Cell365 Well Clinic in Sinsa. In its own English materials the clinic describes three fat-based programmes: Cell Boost, used on the day of harvest; Cell Banking, which freezes and stores cells; and Re·Cell, which uses stored cells later. We ask the clinic the questions above in writing before you travel.
Send us your goal and dates. We get the clinic's written answers on the process, storage and total before you book.
Contact COMEDIProducts, studies and their limits
Product information, human studies, preclinical work and safety notices answer different questions. These selected sources are not a complete systematic review or a guarantee of personal results.
Exosome and stem-cell skin treatments3 sources
Official notice / correction · Selected official-document passages
Public Safety Notification on Exosome Products | FDA ↗
FDA notice of 6 December 2019 about serious adverse events after unapproved products marketed as exosomes in Nebraska. This is a safety signal, not cosmetic-skin incidence data. Its no-approved-products statement concerns the dated US notice, not a current global or Korean approval inventory.
Official notice / correction · Selected official-document passages
Consumer Alert on Regenerative Medicine Products Including Stem Cells and Exosomes ↗
Consumer alert dated 22 July 2020, with a current-as-of date of 9 April 2024, warns about unsubstantiated claims and authorization of regenerative products. Historical statements such as only cord-blood stem-cell products being approved are not reused as a 2026 approval inventory. It does not establish efficacy, legality or authorization of Korean cosmetic-skin products; current regulatory status and specific product identification remain outstanding.
Research literature · Selected paper passages
Regulation of exosomes as biologic medicines: Regulatory challenges faced in exosome development and manufacturing processes ↗
A 2024 narrative review of exosome manufacturing, quality and regulation-not a cosmetic patient-outcome trial. The selected discussion explains why particle size/count alone cannot establish composition, function or batch consistency. Historical authorization statements are not reused as a verified 2026 worldwide inventory. Actual Korean product identity, composition, manufacturing, injection/topical route and MFDS records require separate checks. Authors report no competing interests and university support.
Fat grafting2 sources
Research literature · Selected paper passages
A systematic review of the effectiveness and complications of fat grafting in the facial region ☆ ↗
Review of 43 reports/4,577 people with mixed cosmetic/reconstructive indications, techniques and follow-up. Mostly case-series evidence and heterogeneous measurement do not establish technique superiority. Weighted retention of 41.63% summarizes a subset of volume measurements, not guaranteed individual graft take. Reported 104 complication events/4,577 people have variable ascertainment and are not universal personal risk. Case reports were excluded, so cohorts must not be added to the separate severe-complication case review.
Research literature · Selected paper passages
Complications Associated with Facial Autologous Fat Grafting for Aesthetic Purposes: A Systematic Review of the Literature ↗
This compilation contains 38 people already reported with complications and 58 events across 22 reports, without a denominator of all fat-grafting procedures. Thirty-two severe/permanent events (55% of reported events) must not become ‘55% of treated patients develop severe complications’ or an incidence estimate. It identifies possible serious outcomes such as vascular embolism, vision loss, neurological injury and necrosis. The sample cannot determine whether fillers or fat grafting are safer overall.
General information, not medical advice. Your doctor decides what suits you.
Quick answers
Is SVF the same as stem cells?
No. SVF is a mixed fraction of cells from fat tissue. Cultured adipose-derived stromal cells are a different product grown in a lab. Ask which one a clinic uses.
Can foreigners get fat-derived cell treatment in Korea?
Clinics registered to treat international patients can see you. Whether a specific treatment is allowed depends on how the cells are prepared and used, so ask the clinic which legal route applies.
What does the research say for knees?
A 2025 Cochrane review found stem cell injections may slightly improve knee pain and function up to six months compared with placebo, based on low-certainty evidence, with effects on joint structure and long-term safety uncertain.
Treatment guides
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