What Types of Stem Cell Injections Are Used on the Face?
PRP · BMAC · SVF · Microfat — A Complete Comparison
These are among the most frequently searched questions by people exploring regenerative skin treatments. In this post, we'll break down each type of treatment — the science behind it, how they differ, and who each one is best suited for.
To anyone curious about stem cell skin injections, there's one thing I always want to emphasize first: what type of cell is used, where it comes from, and how it's delivered makes all the difference. Before choosing based on brand names alone, I encourage you to understand the underlying principles.
- Anti-Aging · Aesthetics · Hair Loss: Stem cell anti-aging solutions, stem cell hair loss treatment, facial skin boosters, and fat grafting
- Joint Regeneration: Focused treatment for joint conditions using PRP (blood), BMAC (bone marrow), and SVF (adipose concentrate)
- Refractory Disease Research: Investigating fundamental treatment mechanisms using advanced regenerative medicine technologies
Skin aging is not simply about wrinkles appearing on the surface. It's a process in which the fibroblasts that support the dermis gradually lose function, collagen and elastin production declines, and the skin's ability to repair itself weakens from within. The core philosophy of regenerative medicine-based skin injections is not to "cover up" these changes with external substances like fillers or botulinum toxin, but rather to help the skin rebuild itself from the inside out.
Section 1. Why Are There So Many Types? — Classified by Harvest Source
Autologous injection therapies used for facial rejuvenation are broadly divided into three categories based on where the biological material is harvested from: blood, bone marrow, and fat. Although all three come from your own body, they differ significantly in the types and concentrations of cells they contain — and in their regenerative mechanisms.
① PRP (Platelet-Rich Plasma) — Concentrated Growth Factors from Blood
This is the most widely known approach. Blood is drawn from the arm and spun in a centrifuge, separating out a platelet-rich plasma layer. When these platelets are activated, they release over 4,000 types of growth factors — including TGF-β, PDGF, and VEGF — stimulating fibroblasts and promoting the synthesis of collagen and elastin. (Advances in Regenerative Medicine, Frontiers in Bioengineering, 2025)
Because the procedure is straightforward and requires minimal downtime, PRP is often the first regenerative treatment people try. When repeated three or more sessions, it shows meaningful results for skin texture improvement and hair loss.
② BMAC (Bone Marrow Aspirate Concentrate) — Bone Marrow Concentrate ⭐ The Most Underrated Option
BMAC is produced by drawing a small amount of bone marrow from the iliac crest (pelvic bone) and concentrating it through centrifugation. Bone marrow contains mesenchymal stem cells (MSCs), hematopoietic stem cells, anti-inflammatory cytokines, and a broad range of growth factors — giving it the widest immune-modulatory spectrum of the three harvest sources.
Let me be direct. The reason BMAC has comparatively less published data in the aesthetics space compared to PRP or SVF is straightforward: it requires direct access to bone.
Drawing blood can be done anywhere. Fat harvesting can be performed by any sufficiently trained clinician. But bone marrow aspiration from the iliac crest demands anatomical knowledge, anesthesia management, and hands-on procedural experience — all at once. Without a foundation in invasive clinical techniques — such as those developed in emergency medicine — this procedure is simply not accessible to most cosmetic practitioners. The limited data doesn't reflect limited efficacy. It reflects a limited pool of physicians who can perform it.
② -A. Where BMAC Truly Stands Out — Refractory Autoimmune Skin Conditions
There is one area where BMAC demonstrably outperforms both PRP and SVF for skin treatment: conditions driven by immune hyperreactivity.
Bone marrow-derived MSCs suppress the overactivation of T cells, B cells, and NK cells, while secreting anti-inflammatory and immunosuppressive mediators such as TGF-β, PGE2, and IL-10. This mechanism doesn't simply boost collagen — it recalibrates the skin's immune environment at a cellular level. (Mesenchymal Stem Cells and Psoriasis: Systematic Review, MDPI, 2022)
| Indication | BMAC / MSC Mechanism | Evidence Level |
|---|---|---|
| Psoriasis | Th1/Th17 suppression, Treg upregulation, IL-23 pathway inhibition | Ongoing clinical trials (Phase 1/2) |
| Atopic Dermatitis | Th2 immune overactivation regulation, skin barrier restoration | Preclinical + early clinical evidence |
| Facial Flushing · Rosacea | Vascular hyperreactivity dampening, neuro-immune inflammation modulation | Accumulating clinical experience* |
| Systemic Sclerosis (SSc) | Fibrosis inhibition, vascular endothelial cell regeneration | Case reports + clinical studies |
In a published case series, three patients with severe biologic-refractory psoriasis who received intravenous MSC infusions showed clinically meaningful improvements in PASI scores. (Frontiers in Immunology, 2025) Over the past 25 years, more than 30 documented cases of prolonged psoriasis remission following bone marrow transplantation have been reported in the literature. (Stem Cells as Potential Candidates for Psoriasis Cell-Replacement Therapy, PMC, 2017)
Having spent 15 years as an emergency medicine specialist performing invasive procedures, I have a lower barrier to bone marrow aspiration than most clinicians in the aesthetic field. That background is exactly what led me to incorporate BMAC into skin regeneration in a way most cosmetic practices simply don't.
Two clinical scenarios come up repeatedly in my practice.
First, patients with psoriasis who have not responded to conventional treatments — including corticosteroids, immunosuppressants, or biologic agents. In a number of these cases, BMAC administered intravenously or directly into active lesions produced observable reductions in affected skin area and a meaningful decrease in pruritus.
Second, facial flushing and rosacea. These conditions involve a complex interplay of vascular hyperreactivity and neuro-immune inflammation — making them notoriously difficult to manage with lasers or topical treatments alone. In my clinical observation, the anti-inflammatory and vascular-regulatory properties of BMAC appear to attenuate that excessive vascular response. I continue to build my case experience in this area.
I acknowledge that large-scale RCT data remains limited. But "no published trial" does not mean "no effect." Research happens when investigators are interested and funding follows. BMAC for skin applications is a field where that interest is only just beginning to coalesce.
That said, BMAC does require local anesthesia and involves the psychological barrier of bone marrow aspiration — so for purely cosmetic anti-aging goals, it's rarely the first choice. However, for patients with refractory skin conditions that haven't responded to standard therapies, BMAC may well be the most compelling option to explore.
③ SVF (Stromal Vascular Fraction) — Adipose-Derived Stem Cell Concentrate
SVF is derived from a small amount of fat harvested from the abdomen or thigh, then processed through mechanical or enzymatic methods to isolate the stromal vascular fraction. SVF contains a diverse population of regenerative cells including adipose-derived stem cells (ADSCs), endothelial progenitor cells, immune cells, fibroblasts, and extracellular matrix components. (Adipose-Derived Stem Cells for Facial Rejuvenation, PMC, 2022)
Compared to PRP, SVF contains a greater diversity and density of regenerative cells. Clinical studies have demonstrated that SVF injection alone significantly improves skin density, thickness, and dermal density — with results remaining stable beyond 12 months. (Aesthet Surg J, Rigotti et al.)
④ Microfat / Nanofat Grafting
This approach takes SVF a step further. Lipoaspirate is mechanically minced into injectable particles to create Microfat; when further emulsified to below 100μm in diameter, the result is Nanofat.
In Nanofat processing, most adipocytes are destroyed — but the mesenchymal stem cells and regenerative factors within the SVF are preserved. This allows precise injection using a 25G cannula into the subdermal layer of the face, periorbital area, and nasolabial folds, offering a dual benefit of volumization and skin regeneration. A study on combined Nanofat + PRF grafting reported patient satisfaction rates above 90% compared to conventional fat transfer. (Nanofat-Derived Stem Cells with PRF, PMC, 2017)
Sedation recommended
· oil layers
Volume restoration
Skin regeneration
Regenerative cell pool
Section 2. Which Treatment Is Right for You? — Comparing Efficacy, Invasiveness & Longevity
Side-by-Side Comparison: PRP vs. BMAC vs. SVF vs. Microfat/Nanofat
| Category | PRP | BMAC | SVF | Microfat / Nanofat |
|---|---|---|---|---|
| Harvest Site | Blood (arm) | Bone marrow (pelvis) | Fat (abdomen / thigh) | Fat (abdomen / thigh) |
| Key Components | Platelets · growth factors | MSCs · hematopoietic cells · growth factors | ADSCs · endothelial cells · fibroblasts | SVF + nano-sized fat particles |
| Actual Stem Cells | Trace (hematopoietic) | Moderate (MSCs present) | Rich (ADSCs present) | Rich (ADSCs + SVF) |
| Invasiveness | Minimal | Moderate–High | Moderate | Moderate |
| Skin Improvement | ★★★☆☆ | ★★★★☆ Refractory conditions ★★★★★ |
★★★★☆ | ★★★★★ |
| Volume Effect | None | None | Mild | Moderate–High |
| Durability | 3–6 months | 6–12 months | 12+ months | 12+ months |
| Downtime | Minimal | 2–5 days | 3–7 days | 3–7 days |
| Best For | Early aging prevention · hair loss · skin texture | Joint + anti-aging Refractory autoimmune skin conditions (psoriasis · rosacea · facial flushing) |
Moderate aging · skin regeneration | Volume loss + skin regeneration |
Section 2-A. Is "Stem Cell Injection" Just a Marketing Term?
Honestly — it's half true and half misleading.
Marketing PRP as a "blood stem cell injection" is an overstatement. PRP's benefits come from platelet-derived growth factors, not from stem cells. SVF and Nanofat, on the other hand, do genuinely contain adipose-derived stem cells (ADSCs), and it has been demonstrated in clinical research that these cells secrete growth factors and cytokines that stimulate angiogenesis, collagen synthesis, and tissue regeneration. (Regenerative and Stem Cell-Based Techniques for Facial Rejuvenation, PMC, 2021)
The key takeaway: rather than focusing on the treatment name, always ask what specific components are being injected, and by what method.
Section 2-B. Which Option Is Right for Your Situation?
Section 2-C. What Else Determines the Outcome?
Even with the same SVF or PRP preparation, outcomes can vary significantly depending on centrifugation parameters, cannula gauge, injection depth, and cell viability management. Nanofat in particular requires considerable technical precision — excess pressure during injection can damage cells. More than "which treatment," the question of "who performs it, and how" is what truly determines the result.
Additionally, verifying whether the clinic holds official designation as an Advanced Regenerative Medicine Institution from the Ministry of Health and Welfare is an important first step toward safe treatment. There is a meaningful difference between a routine cosmetic procedure and one conducted under an advanced regenerative medicine research protocol.
Section 3. What to Know Before and After Treatment
| Stage | Key Points |
|---|---|
| Before Treatment | Disclose any use of aspirin or antiplatelet medications / Confirm absence of active infection or immune conditions / Assess available fat volume (for SVF and fat grafting procedures) |
| Day of Treatment | PRP can be completed within 30 minutes under topical anesthetic / SVF and fat grafting typically take 1–3 hours including harvest |
| Recovery | PRP: mild swelling for 1–2 days / SVF · Nanofat: bruising and swelling for 3–7 days / Return to makeup as directed by your physician |
| Results Timeline | Gradual improvement beginning at 1–3 months / Peak results typically around 6 months / PRP benefits from 3 or more sessions |
| Side Effects | Immune rejection is extremely rare given autologous origin / Risk of inflammation increases with poor sterile technique or substandard equipment |
📌 Key Takeaways
- PRP: Growth factor-based. An accessible entry point for regenerative care; best with repeated sessions.
- BMAC: Contains bone marrow-derived MSCs. Broadest immune-modulatory spectrum — particularly noteworthy for refractory autoimmune skin conditions such as psoriasis, rosacea, and persistent facial flushing.
- SVF: Rich in adipose-derived stem cells. Highly effective for moderate-to-significant skin aging and regeneration.
- Microfat / Nanofat: Combines SVF's regenerative properties with volumizing effect — the most comprehensive option overall.
- Dr. Joo's Medical Philosophy → https://www.thesaeron.kr/eng/story/
- Saeron Clinic Official Website → https://www.thesaeron.kr/eng/