Definition
스마스 리프팅 (seumasseu ripeuting, SMAS lifting) refers to facelift surgery that addresses the Superficial Musculo-Aponeurotic System — the fibromuscular layer lying beneath the facial skin and subcutaneous fat. The SMAS is not a surface structure; it is a continuous anatomical sheet of muscle, fibrous connective tissue, and fat that forms the structural foundation of the mid-face and lower face.
A skin-only facelift pulls and excises excess skin without touching this deeper layer. SMAS facelift, by contrast, repositions the structural layer itself, restoring the anatomical position lost to gravity-driven descent. The result is a more natural appearance — because the underlying architecture has been corrected, not merely the surface — and a significantly longer-lasting outcome compared to skin-only techniques.
The SMAS Layer: Why It Matters for Facelift Longevity
The SMAS runs superficial to the parotid gland (the large salivary gland in front of the ear), connects inferiorly to the platysma muscle of the neck, and connects superiorly to the zygomaticus (cheekbone) muscles and orbicularis oculi (the muscle encircling the eye). Because it is mechanically continuous with these structures, the SMAS transmits movement across the face and serves as the structural scaffold to which overlying fat compartments are anchored.
Gravity acts primarily on the SMAS and on the fat compartments attached to it. Over time, this produces the characteristic signs of facial aging: jowling (descended lower-face fat over the jawline), deepening nasolabial folds (the lines from nose to mouth corners), and neck laxity. The skin sags secondarily, as a consequence of the deeper structural descent.
Skin-only facelift tightens the surface without correcting the underlying descent. Because the SMAS continues to sag post-operatively, the skin-only result lasts approximately 2–3 years before significant relapse. SMAS repositioning addresses the gravitational vector directly — the structural support rebuilt by lifting the SMAS holds the overlying tissue in its corrected position, producing longevity of 7–10 years. The trade-off: SMAS technique requires greater surgical dissection, longer operating time, and a surgeon specifically trained in the anatomy of this layer.
SMAS vs Deep Plane: The Distinction
SMAS facelift is not a single technique — it describes a family of approaches that all address the SMAS layer, but at different depths and with different degrees of ligament release.
SMAS plication and imbrication are the most conservative variants: the SMAS is folded onto itself (plication) or partially overlapped and sutured (imbrication) without entering the plane deep to it. These approaches are adequate for moderate facial laxity and carry lower risk of injury to facial nerve branches that run in the deeper plane.
SMASectomy excises a strip of SMAS tissue, allowing direct tightening of the remaining layer. The mechanical effect is similar to plication but the tissue is removed rather than folded.
Deep plane facelift extends the dissection below the SMAS into the plane between the SMAS and the facial muscles. This releases the McGregor patch (a fibrous condensation over the malar eminence) and the zygomatic retaining ligaments — the fibrous anchors that tether the SMAS to the underlying bone. Releasing these ligaments allows the surgeon to directly reposition the descended malar (cheekbone) fat pad and correct significant nasolabial folds from below, rather than pulling indirectly from above. Deep plane is considered the gold standard for patients with significant mid-face ptosis (descent) and is performed by Korean plastic surgeons — 대한성형외과학회, Daehan Seonghyeong Oegwa Haghoe, the Korean Society of Plastic and Reconstructive Surgeons (KSPRS) — with advanced facelift training.¹
Not all board-certified surgeons perform deep plane. When consulting a Korean facelift surgeon, ask specifically which SMAS variant they use and for which patient indications.
When SMAS Facelift Is Appropriate vs Thread Lift
Three factors determine whether SMAS facelift or thread lift is structurally appropriate for a given patient: degree of laxity, anatomical location of the descent, and longevity expectation.
SMAS or deep plane facelift is appropriate when: significant jowling is present (descended lower-face fat creating a break in the jawline), nasolabial fold ptosis is moderate to severe, neck laxity is present, the patient is typically 45 or older, and the target outcome is 7–10 year longevity. Mini facelift with SMAS component is appropriate for moderate jowling in patients aged approximately 40–55 with good residual skin elasticity.
Thread lift works via a fundamentally different mechanism: barbed sutures are passed through superficial tissue to create temporary traction without any surgical dissection of the SMAS. Thread lift is appropriate for mild laxity, typically in patients aged 30–45 who want subtle maintenance, are not ready for surgery, or require minimal downtime. Thread lift results last approximately 1–2 years.
The candidacy boundary is anatomical, not a matter of preference: if a patient’s degree of laxity requires SMAS correction, thread lift will not achieve the structural result. Applying thread lift to a patient who requires SMAS facelift is a structural mismatch — the superficial traction of threads cannot reposition a significantly descended SMAS layer.
Often a good candidate
- Significant jowling and jawline definition loss
- Moderate to severe nasolabial fold ptosis
- Neck laxity present
- Age 45+ with realistic longevity expectation of 7–10 years
- Patient prepared for surgical recovery of 12–14 days minimum
Should reconsider or wait
- Moderate jowling in patient aged 40–55 — mini facelift with SMAS component may be more appropriate than full SMAS facelift
- Significant medical comorbidities affecting anaesthesia risk
- Active smoker — smoking impairs wound healing and increases complication risk
Not a suitable candidate
- Mild laxity only — thread lift is structurally more appropriate
- Patient expecting thread-lift-level downtime from SMAS surgery
- Unrealistic expectation of permanent result — SMAS facelift slows but does not stop the aging process
Korean Surgeon Training in SMAS
KSPRS board certification requires completion of six years of medical school, a four-year plastic surgery residency, and passage of KSPRS board examinations.¹ Facelift technique — including SMAS anatomy and SMAS plication — is part of the formal plastic surgery residency curriculum in Korea.¹
As of 2024, approximately 2,100 board-certified plastic surgeons are registered with KSPRS.¹ Patients can verify a Korean surgeon’s board certification directly through the public KSPRS registry.¹ KSPRS board certification is a legal requirement to perform plastic surgery in licensed Korean medical facilities.¹
Deep plane technique requires training beyond standard residency — it is not universal among board-certified surgeons. When evaluating a Korean facelift surgeon, ask: how many SMAS facelifts do you perform annually; do you perform deep plane, and for which specific indications; and what fellowship or advanced training have you completed beyond residency?¹ Annual case volume and technique specificity are more informative than clinic size or brand.
Related Terms
Platysma — the broad, flat muscle of the neck that forms the inferior continuation of the SMAS; platysma plication (tightening) is typically performed as part of facelift to address neck laxity.
Malar fat pad — the fat compartment of the cheek that descends with age, deepening nasolabial folds; direct repositioning of the malar fat pad is a key objective of deep plane facelift.
Retaining ligaments — fibrous anchors connecting the SMAS to underlying bone; releasing these (as in deep plane) allows greater anatomical repositioning.
Ptosis — downward descent or drooping of tissue; in facelift context, refers to the gravitational descent of facial fat compartments and the SMAS.
What is a SMAS facelift in simple terms?
A SMAS facelift is a surgical procedure that repositions the fibromuscular layer underneath your facial skin (the SMAS), rather than just pulling and removing excess skin. By lifting the structural layer, the result looks natural and lasts significantly longer — typically 7–10 years — compared to skin-only lifting techniques. Most Korean plastic surgeons performing facelift use SMAS technique as standard.
How long does a SMAS facelift last?
SMAS facelift results typically last 7–10 years before significant age-related laxity recurs. Deep plane techniques (which address the deeper facial ligaments) may extend longevity further. Factors affecting longevity: patient age at time of surgery, skin quality, sun exposure history, and ongoing volume loss (fat atrophy). Some patients combine thread lift or fat grafting 5–7 years post-facelift to maintain and extend the result without repeat surgery.
Is deep plane the same as SMAS facelift?
No — deep plane is a more advanced variant of SMAS technique. Standard SMAS facelift addresses the SMAS layer without entering the plane below it. Deep plane facelift dissects into the plane beneath the SMAS, releasing retaining ligaments for direct repositioning of descended mid-face fat compartments. Deep plane is considered the gold standard for significant mid-face ptosis and nasolabial fold correction. Not all surgeons perform deep plane; verify your surgeon's specific technique.
Can I have a SMAS facelift in Korea without a long stay?
SMAS facelift requires a minimum 12–14 day Seoul stay. Key milestones: drain removal at 24–48 hours, stitch removal at 7–10 days, and a second post-operative review before flying clearance. Flying before stitch removal or without drain clearance is not recommended. For patients with severe time constraints, discuss mini facelift (which may allow departure at day 10–12) with your surgeon — but SMAS facelift cannot be rushed without compromising post-operative monitoring.