Stem Cell & Regenerative · Patient guide

What Is Vaginal Stem Cell Therapy and How Does It Work?

Vaginal stem cell therapy is a general term for injecting a biological product into vaginal or vulvar tissue to encourage repair, usually platelet-rich plasma, fat-derived cells, cultured stem cells or cell-free exosomes. The idea is that growth factors stimulate new blood vessels, collagen and nerve activity in thinned tissue. Evidence is early and results are temporary. Somssi Women's Clinic in Gangnam, Seoul explains each product plainly and recommends surgery or hormones when those fit better.

Medically reviewed by Dr. Yoon Ho-joo, MD, PhD, OB/GYN specialist, Somssi Women's Clinic · Last updated October 2026

At a glance

Key facts

The essentials, based on how Somssi Women's Clinic performs this procedure or answers this question. Your plan is confirmed at consultation.

• Definition: Injection of a biological product into vaginal or vulvar tissue to stimulate repair
• Common products: PRP, fat-derived cells, cultured stem cells, exosomes, growth-factor serums
• Proposed mechanism: Growth factors promote blood vessels, collagen and nerve activity
• Where injected: Vaginal wall, vestibule, clitoral area or labia majora, depending on the goal
• Evidence status: Investigational; small studies, no large randomized trials
• What it cannot do: Tighten muscle, shorten a stretched canal or lift a descended uterus
• Reviewed by: Dr. Yoon Ho-joo, MD, PhD, OB/GYN specialist

Vaginal stem cell therapy means injecting a biological product into the tissue of the vagina or vulva in the hope that it will regenerate thinned, dry or weakened tissue; in practice the product is rarely true stem cells, and the effect, where it occurs, is modest and temporary. Understanding what is actually in the syringe is the key to understanding how, and whether, it works.

The products behind the name

Platelet-rich plasma (PRP)

A small amount of your blood is spun in a centrifuge to concentrate the platelets, which are then injected. Platelets carry growth factors that signal cells to repair and build new blood vessels. PRP contains no stem cells, which is why calling it stem cell therapy is misleading, though many clinics do. The O-Shot is a branded PRP protocol.

Fat-derived cells

Fat harvested by liposuction contains a mixture of fat cells, supporting cells and a small fraction of stromal stem cells. It can be injected as whole fat for volume, as in vaginal fat transfer to the labia majora, or processed to concentrate the cellular fraction.

Cultured stem cells

Cells taken from fat, bone marrow or a donor source are expanded in a laboratory over weeks and then injected. This is the only product that genuinely consists of stem cells. It is also the most tightly regulated: in Korea, cultured cell products must comply with Ministry of Food and Drug Safety rules, and approval for vaginal injection is not something most clinics can show.

Exosomes and growth-factor serums

Exosomes are tiny vesicles released by cells, carrying proteins and genetic signals. Exosome products contain no cells at all. They are sold as cosmetics for topical use in Korea and elsewhere; injecting them is not an approved use. Growth-factor serums are similar cell-free preparations. Our guide on stem cells versus exosomes compares them.

How the treatment is supposed to work

Vaginal tissue that has thinned from menopause, childbirth or aging has fewer blood vessels, less collagen and reduced nerve density. Growth factors, whether delivered by platelets, cells or vesicles, signal local cells to multiply, form new capillaries and lay down collagen. In theory this thickens the lining, improves lubrication and sensation, and adds a little bulk around the urethra.

The signal is real; growth factors do these things in laboratory and wound-healing settings. What is uncertain is whether an injection delivers enough of the right signal, for long enough, to change the vagina in a way you can feel, and whether that change lasts. Small studies suggest modest, short-lived improvement in some women; there are no large randomized trials. See our evidence review.

What happens at a session

1. Consultation and examination to confirm the symptom is one an injection could plausibly address.
2. Numbing cream, sometimes with a small amount of local anesthetic.
3. Preparation of the product: a blood draw and centrifuge for PRP, fat harvest for fat-based treatment, or a prepared vial for manufactured products.
4. Injection into the chosen area: vaginal wall, vestibule, clitoral region or labia majora.
5. Walk out the same day; mild soreness, swelling or spotting for a few days.
6. Any benefit appears over four to twelve weeks and fades over months; repeat sessions are usual.

What it cannot do

No biological injection can shorten a vaginal canal that has stretched, gather pelvic floor muscles that have separated, lift a uterus that has descended, or rebuild a perineum that was torn at delivery. These are mechanical problems of muscle and connective tissue. A posterior vaginal repair addresses them directly: at Somssi the lower vaginal wall mucosa is peeled to under a millimeter, the pelvic floor muscles are gathered and sutured, the mucosa is folded and closed in two layers, and a descended uterus is lifted and fixed. Read how vaginoplasty is performed.

Regenerative injections also do not replace estrogen in menopause, and they do not treat infection, skin disease or nerve injury.

How Somssi fits regenerative treatment into care

Somssi Women's Clinic is a surgical gynecology clinic in Gangnam, Seoul, founded in 2000 and led by Dr. Yoon Ho-joo, MD, PhD. Our stem cell program is an autologous NK immune-cell program: your natural-killer cells are cultured for about two weeks and returned intravenously as immune support. It is not a vaginal injection. For intimate concerns we offer plasma-based and fat-based volume options for the labia majora, hormone therapy for atrophy, and autologous-tissue surgery for structural problems.

Every regenerative request begins with measurement of vaginal length, width and wall thickness, assessment of pelvic floor strength and a pelvic ultrasound. The product follows the diagnosis, never the other way round.

Bottom line

Vaginal stem cell therapy is an umbrella term for injecting growth-factor-rich material, most often PRP rather than real stem cells, to stimulate repair in thinned tissue. The mechanism is plausible, the evidence is early and the effect is temporary. It cannot fix structural laxity or prolapse. If you want to know which category your symptoms fall into, contact Somssi for an examination.

Questions patients ask

Frequently asked questions

Short, honest answers. For anything personal, a consultation is the right place to ask.

See the full FAQ →

Are real stem cells used in vaginal stem cell therapy?

Usually not. Most treatments sold under this name use platelet-rich plasma, which contains platelets and growth factors but no stem cells, or cell-free exosome products. Only laboratory-cultured cell preparations are true stem cells, and those face strict regulation in Korea. Always ask what the product actually contains.

Where is the product injected?

It depends on the goal. For dryness, into the vaginal wall and vestibule; for sensation or mild incontinence, into the clitoral area and the front vaginal wall near the urethra; for volume, into the labia majora. Each site has its own anatomy and risks, which is why examination comes first.

How long does it take to see results?

If a benefit occurs, it is usually noticed between four and twelve weeks after injection as tissue responds, then fades over the following months. Immediate changes are mostly swelling. A lack of any change by three months generally means the treatment has not worked for you.

Does it hurt?

With numbing cream most women feel pressure or brief stinging. Soreness, mild swelling and light spotting for a few days are normal. The clitoral area is more sensitive than the vaginal wall, so expect more tenderness there.

Can it be combined with surgery?

Sometimes, in sequence. If you have structural laxity and thin mucosa, Somssi repairs the structure first and considers a mucosal treatment after the surgical result has settled at around eight weeks. Doing both at once makes it impossible to tell what helped and complicates healing.

Is the NK cell program a vaginal treatment?

No. Somssi's autologous NK immune-cell program is an intravenous immune-support treatment for women with a cancer history, family cancer history, chronic illness or fatigue. It has nothing to do with vaginal tightness or dryness and is not offered for those purposes.

Keep reading

Related treatments and guides

• Vaginal Stem Cell Therapy — the treatment overview and Somssi's approach
• Vaginal Stem Cell Therapy vs PRP: What Is the Difference? — the two most common products compared
• Vaginal Stem Cell Therapy vs Exosomes: What Is the Difference? — cell-free products explained
• Is Vaginal Stem Cell Therapy Proven to Work? — the evidence picture
• Is Vaginal Stem Cell Therapy Safe? — risks by product type
• What Does Vaginoplasty Actually Repair? — the structural problems injections cannot fix

Sources and medical review

• US Food and Drug Administration (FDA), consumer information on stem cell, exosome and regenerative products.
• American College of Obstetricians and Gynecologists (ACOG), guidance on elective female genital cosmetic procedures.
• Te Linde's Operative Gynecology (textbook), chapters on vaginal anatomy and posterior repair.

Next step

A consultation first. A decision only when you are ready.

Tell us what you are experiencing and what you hope to change. Dr. Yoon examines, measures and explains the options, including when no surgery is the right answer. International patients can start with an online consultation before travelling to Seoul.