SMAS lifting is a facelift technique that repositions a specific layer of tissue beneath your skin called the SMAS, short for Superficial Musculoaponeurotic System. Rather than just pulling skin tighter, this approach lifts the structural foundation of your face, producing results that look more natural and last significantly longer than a skin-only facelift. It’s the most widely performed category of modern facelift surgery, and the same tissue layer is now targeted by non-surgical devices as well.
What the SMAS Layer Actually Does
The SMAS is a fibrous network of tissue that sits between your skin and the deeper facial muscles. It’s composed of the platysma muscle (the broad sheet of muscle running from your chest to your jaw), the fascia covering your parotid gland near your ear, and a fibromuscular layer spanning the cheek. Think of it as a connective web that links your facial muscles to the skin above them.
This layer is what allows your facial expressions to work. When you smile or frown, your muscles contract, and the SMAS transmits and amplifies that movement to the surface. Researchers have described it as a “central tendon” that coordinates facial muscular contraction. It sits below the cheekbone and above the platysma’s muscular belly, running as a distinct layer over the parotid gland and the fascia covering the masseter muscle.
As you age, the SMAS loosens and descends. Because it connects muscle to skin, that descent drags everything with it, creating jowls, deepening nasolabial folds, and softening the jawline. Lifting only skin addresses the surface but leaves this sagging infrastructure untouched, which is why skin-only facelifts tend to look pulled and don’t hold up over time.
How the Surgery Works
A SMAS facelift uses incisions placed around the ear to access the tissue layer beneath the skin. Surgeons typically make a retrotragal incision (tucked inside the natural contour of the ear’s cartilage) or a pretragal incision (just in front of the ear). For men, the pretragal approach works well because many men have a natural crease in that area that hides the scar. When incisions extend into the hairline, surgeons use a beveled cut at a 20 to 45 degree angle so that hair follicles grow back through the scar, camouflaging it further.
Once the skin is separated from the underlying tissue, the surgeon addresses the SMAS itself. There are several variations of this step, and the technique chosen depends on your facial structure and how much correction is needed.
- SMAS plication: The tissue is folded over on itself and sutured in place without removing any tissue. This adds volume, making it especially useful for thinner faces that look deflated.
- SMASectomy: A strip of the SMAS layer is removed, then the edges are sutured together under tension. This reduces volume and tightens the layer but offers less tissue movement than other approaches.
- SMAS flap with undermining: The SMAS is incised, lifted off the deeper structures, repositioned, and any excess is trimmed away before the layer is closed under tension. This offers the most freedom to reshape and mobilize tissue but takes more surgical time and skill.
After the SMAS is repositioned, the skin is redraped over the new contour, excess skin is removed, and the incisions are closed.
Who Is a Good Candidate
SMAS plication and similar conservative approaches work best for people who are relatively thin and have mild to moderate skin laxity and jowling. If you’re noticing early sagging along the jawline, softening of the lower face, or mild platysmal banding in the neck, these techniques can deliver a meaningful improvement.
People with thicker skin, significant midface drooping, or deep nasolabial folds are generally not ideal candidates for the more conservative versions of this procedure. Overweight patients also tend to see less optimal results with plication or SMASectomy alone, and may benefit from a more aggressive approach. Facial asymmetry caused by chronic facial paralysis is another indication where SMAS plication can help restore balance.
SMAS Lift vs. Deep Plane Facelift
A standard SMAS lift works on the SMAS layer itself but doesn’t go beneath it. A deep plane facelift releases the ligaments that anchor the SMAS to the bone, allowing the surgeon to reposition the deeper facial structures, including muscles and fat pads, as a single unit. This makes the deep plane approach more effective for severe sagging and heavy jowling because it addresses layers that a standard SMAS lift doesn’t reach.
The tradeoff is recovery. SMAS facelift patients typically experience less swelling and bruising, with most returning to work within 7 to 10 days. Deep plane patients can expect more pronounced swelling and bruising that may take two weeks or longer to subside. Deep plane procedures also cost more due to longer surgical time and greater complexity. Results from a deep plane lift are believed to last 10 years or more, while a standard SMAS lift is often quoted at 5 to 7 years. However, a study tracking patients from primary to secondary facelift found that a well-performed SMAS flap procedure lasted an average of 12 years before patients sought additional surgery.
Recovery Timeline
Day one after surgery is the most uncomfortable. You’ll feel groggy from anesthesia, and this is when pain medication matters most. You’ll need someone to drive you home and stay with you overnight. By the next day, your surgeon will typically schedule a follow-up visit to check the incisions and assess swelling.
Bruising and swelling peak around days three and four. This is when you’ll look your worst, but both will steadily improve from there. By days four through six, most people no longer need prescription pain medication and start moving around more comfortably. During the first week, keeping incisions clean is critical to prevent infection.
Sutures come out anywhere from the end of the first week to week three, depending on how your healing progresses and the specific technique used. By the end of week two, many people feel ready to return to work and begin light activities like walking. Residual swelling can linger for several additional weeks, and your final result will continue to refine over the following months as tissues settle into their new position.
Risks and Complications
The most feared complication of any facelift is injury to the facial nerve, which controls movement on one side of your face. With SMAS techniques, this risk is low. A 15-year review of 241 patients (189 who had SMASectomy and 52 who did not) recorded zero cases of transient or permanent facial nerve injury in either group. That said, the risk is not zero across all surgeons and all patients. Hematoma (blood collecting under the skin) is the most common complication of facelifts generally, and infection, poor scarring, and skin irregularities are possible though uncommon.
Cost
The national average cost of a SMAS facelift is approximately $13,574, with a typical range of $10,738 to $22,262. That figure includes surgeon fees, anesthesia, and facility costs, but the total varies based on the surgeon’s experience, the complexity of the procedure, geographic location, and whether any complementary procedures (like a neck lift or eyelid surgery) are performed at the same time.
Non-Surgical SMAS Lifting
Devices that use microfocused ultrasound (the best known being Ultherapy) can target the SMAS layer without surgery. These devices concentrate ultrasound energy at precise depths, including 4.5mm below the skin surface where the SMAS sits, heating the tissue to over 65°C. At that temperature, collagen proteins denature almost immediately, causing existing collagen fibers to contract while stimulating the production of new collagen over the following months.
One distinctive feature of the microfocused ultrasound with visualization (MFU-V) technology is real-time imaging up to 8mm deep. This lets the practitioner see the SMAS, fat, dermis, and epidermis on screen and treat each layer with precision, creating tiny thermal lesions roughly 1 cubic millimeter in size without damaging the skin above.
Non-surgical SMAS lifting involves minimal downtime and less discomfort compared to surgery, which makes it appealing for people who want a modest tightening effect without the commitment of an operation. The results, however, are far subtler. These devices work best for mild laxity and are not a replacement for surgery in cases of significant sagging. Patients who aren’t suitable candidates for ultrasound-based tightening are typically directed toward surgical options instead.