SVF (stromal vascular fraction) is the cell mixture obtained when a small amount of fat is harvested from the person’s own fat tissue under local anaesthesia and processed in a closed system; the fat cells are separated out, leaving a population of cells that also contains stem cells. It is applied in the same session; there is no laboratory or culture phase. It adds no volume — this is what distinguishes it from fat grafting.
I do not describe SVF as a “stem cell treatment”: the content is not a single, defined stem cell product but a mixed cell population. The evidence is limited and the procedure is extensive; I do not use this method in my clinical practice, and this page is informational. The general framework of cellular treatments, and the methods I do perform, are on the cellular therapies page.
I am a specialist in anaesthesiology and reanimation; sterile technique, local anaesthesia and injection safety are core areas of my training. I assess cellular treatments within this framework.
What is in it, and how is it thought to work?
Alongside fat cells, fat tissue contains vessel-wall cells, immune cells and mesenchymal stem cells. The mixture obtained after separation is called the stromal vascular fraction.
The contribution of these cells to tissue repair is thought to occur mainly through the growth factors and signalling molecules they secrete — that is, through a paracrine effect. Statements such as “the delivered cells turn into the damaged tissue” or “they become fibroblasts and produce collagen” have not been demonstrated in humans, so I do not make them.
The process
- Fat harvest. Under local anaesthesia, a small amount of fat is taken from the abdomen or flank; about 20 minutes.
- Separation. The fat is processed in a closed system and the fat cells are separated out; about 60 minutes.
- Application. The resulting cell suspension is injected into the target area; about 15 minutes.
The process is completed on the same day, in a single session. The effect is not immediate; changes are reported within months.
Areas of use
Skin. Applied to the face, neck, décolletage and the back of the hands with skin quality as the goal in wrinkles and loss of elasticity. Because the fat cells are separated out, it adds no volume; hollowing and volume loss are not the target of this method. If hollowing predominates under the eye, filler is considered; if thin skin and dark circles predominate, biorevitalisers or polynucleotide products — the relevant pages are under-eye light filler and under-eye polynucleotide treatment. For the back of the hands, region-specific assessment is on the hand rejuvenation page.
Hair. The form applied in hair loss is on the SVF stem cell hair therapy page.
How it differs from other cell methods
With autologous cell treatments, the decision depends on time: when weeks of laboratory culture are acceptable, cultured fibroblasts come to the fore; when same-day completion is preferred, micrografts or SVF do. The final choice is made at consultation.
The cultured option is on the autologous fibroblast therapy page, and the same-day option from skin on the autologous micrograft page. Options that do not involve cell transplantation are on the exosome and PRP pages.
SVF requires a fat harvest, takes a long time, and preparation methods differ between clinics. A more extensive procedure does not mean a better result.
Being honest about the level of evidence
There is no large, controlled human study showing the effect of SVF on skin quality. A systematic review of adipose-derived cell therapies on skin quality reports that studies are heterogeneous in protocol, follow-up and assessment tools, that combination treatments performed better than SVF alone, and that no definitive conclusions can be drawn 1. The preparation method, the resulting cell composition and the application technique are not standardised, so the result of one study cannot be transferred directly to another. In addition, the degree of processing and the way cells derived from fat tissue are applied is a matter that requires separate assessment under cell-product regulations. Alongside studies reporting improvement there are studies reporting limited benefit or lacking a control group.
For these reasons I do not use SVF in my clinical practice and I do not market it as “stem cell treatment”. I write this page so that people researching the method can find accurate information.
The procedure and pain management
Topical anaesthetic cream is standard. Because I am an anaesthesiologist, I treat pain management as a separate part of the procedure.
Fat harvesting is done under local anaesthesia; what you feel is a brief sting while the anaesthetic is given. Mild pain and tenderness at the site may last a few days. For skin application, cooling is added when needed; what you feel is a brief sting and mild burning.
Aftercare
First 24 hours
- No make-up on the treated area
- No hot showers, sauna, hammam or steam
- Avoid heavy exercise
- No alcohol
- Do not sleep face-down (facial treatments)
- Do not touch the injection points; do not squeeze or massage the bumps
First 48 hours
- Avoid direct and prolonged sun exposure
- No facial massage, skincare treatments or energy-based device treatments
Expected findings Small bumps (papules) at the injection points lasting 12–24 hours are expected and show that the product has settled in the skin. Mild swelling, tenderness or bruising lasting a few days may occur. Around the eyes, bruising is slightly more likely than on the rest of the face.
Additional advice
- Mild pain, bruising and swelling at the fat harvest site may last a few days; a short period of compression may be advised
- No heavy exercise for 1 week
- No deep-tissue laser or aggressive peeling to the area for the first 3 months
- If redness increases, or warmth or fever develops, contact the clinic
Safety and anatomy
Because allergic reactions can occur rarely, treatments are carried out under medical supervision.
The cells are your own; the system is closed and sterile. Fat harvesting is a minor procedure; it requires assessment for vessel and tissue injury, infection and healing problems. The risk of infection is low but not zero. Temporary redness, small bumps and bruising may occur at the injection points; the expected durations are given in the aftercare section.
Regulatory status: The closed, single-use separation kits are medical devices assessed under CE and TİTCK frameworks. Approval belongs to a product and to a specific indication, not to a technique or to a physician.
Who is not suitable
Treatment is not performed, or is postponed, in the following situations:
- Active infection or inflammation in the treatment area
- Autoimmune disease in an active phase
- Pregnancy and breastfeeding
- Known hypersensitivity to the product components
- Uncontrolled chronic illness
- Untreated bleeding disorder or unregulated anticoagulant use
I do not perform these treatments during active cancer treatment. For a person with a history of cancer, I make the decision together with the treating specialist.
Treatment is also not performed with a known hypersensitivity to the local anaesthetics used for fat harvesting.
For a person on immunosuppressive treatment, the decision is made at consultation.
Treatment is not performed when fat tissue is insufficient or in uncontrolled diabetes.
Treatment is postponed during an active cold sore (herpes) outbreak in the area, during an active acne flare, and if aggressive peeling or laser was performed on the same area within the past two weeks.
Without being a medical contraindication, I also consider expectation and treatment to be mismatched in these situations:
- People expecting a marked and lasting change from a single session
- People whose actual need is a change in volume or shape — SVF does not add volume, and filler is assessed
- People who do not want a fat harvest
Suitability is determined by consultation in every case.
Frequently asked questions
How does SVF differ from fat grafting?
Fat grafting is done to add volume, and the fat cells are left in the tissue. In SVF the fat cells are separated out; the goal is tissue quality, not volume. Facial fullness should therefore not be expected.
Is fat harvesting for SVF an operation?
It is not an operation requiring general anaesthesia; it is a minor procedure in which a small amount of fat is removed with a fine cannula under local anaesthesia. Because it involves tissue harvesting, it still requires assessment for bleeding, infection and healing.
Is a single SVF session enough?
The process is completed in a single session. There are no controlled data on how long the effect lasts or whether repetition is needed, so I do not give a schedule.
Is there a cancer risk with SVF?
The applied cells come from your own tissue and their genetic makeup is not altered; however, there are not enough data on the long-term safety of adipose-derived cells in people with a history of cancer. I do not perform this treatment during active cancer treatment; with a history of cancer, I make the decision together with the treating specialist.
Planning your visit
My clinic is in Nişantaşı, Şişli, on the European side of Istanbul, approximately 45 minutes from Istanbul Airport.
For the treatments I do offer, I suggest planning a stay of two to three days: arrival, consultation and treatment, and departure. Flying is generally appropriate 24 hours after an injectable treatment.
Consultations are conducted in English. Follow-up after you return home is arranged remotely, and I remain reachable for any questions during the period in which the result develops.
Dr. Ömer Fatih Şahin — Specialist in Anaesthesiology and Reanimation Diploma Registration No: 113606
Published: 22 February 2026 · Last updated: 2026-09-21 This content has been medically reviewed by Dr. Ömer Fatih Şahin.
References
- Chon J, Randall SE, Schumann TA, et al. A Systematic Review of Adipose-Derived Cell Therapies on Skin Quality. Aesthet Surg J Open Forum. 2025;7:ojaf098. https://pubmed.ncbi.nlm.nih.gov/40852442/