The deep plane facelift and SMAS facelift differ by the tissue layer each one dissects and moves. A SMAS facelift tightens the superficial musculoaponeurotic system from above, while a deep plane facelift works beneath it, releasing the ligaments that tether the cheek and jowl so skin and SMAS lift together. On longevity, the published evidence is far less settled than many claims suggest.
Board-certified plastic surgeon Dr. Joshua Lampert completed a six-year plastic surgery residency at The Mount Sinai Hospital in Manhattan, where he served as solo Chief Resident, followed by an ACGME-accredited fellowship in craniofacial surgery. Here, he draws on that training to explain the anatomy behind each approach and how the research may inform the choice for anyone considering a facelift in Miami.
What the SMAS Is, and Why Every Facelift Technique Is Defined by It
The superficial musculoaponeurotic system (SMAS) is a fibrofatty fascial layer that covers the parotid gland at the side of the face, envelops the muscles of facial expression toward the center, and continues into the platysma muscle of the neck, according to StatPearls. Because cheek fat and the jowl descend along with this layer, modern facelift techniques are largely defined by how they handle it.
A few anatomic terms come up in nearly every conversation about facelift technique:
- SMAS: The layer described above, which a surgeon can fold, trim, or elevate as a flap.
- Sub-SMAS plane: The space just beneath the SMAS and above the deep facial fascia. Branches of the facial nerve run deeper still, so dissection here calls for detailed anatomic knowledge.
- Retaining ligaments: Dense fibrous attachments, including the zygomatic, masseteric, and mandibular ligaments, that anchor superficial tissue to deeper structures. As these supports loosen with age, the cheek and jowl may begin to sag.
Where a technique operates relative to these ligaments is the practical dividing line between SMAS and deep plane surgery.
Deep Plane vs. SMAS: Side-by-Side Comparison
Comparing the two approaches row by row shows where they genuinely differ and where published data overlaps. Figures come from pooled reviews and individual studies, and personal outcomes can vary considerably.
|
Factor |
SMAS Facelift |
Deep Plane Facelift |
|
Dissection plane |
Skin elevated in the subcutaneous plane; SMAS tightened from above, sometimes with limited dissection beneath it |
Dissection carried beneath the SMAS and medial to the major retaining ligaments |
|
What is released |
Retaining ligaments generally left intact |
Zygomatic, masseteric, and mandibular ligaments released |
|
Skin and SMAS move as one unit |
No; the two layers are typically lifted separately |
Yes; skin and SMAS are lifted together as a composite flap |
|
Ideal candidate |
Skin laxity and jowling with modest midface descent |
More pronounced midface descent, deep nasolabial folds, or heavy jowls that may benefit from ligament release |
|
Operative time |
Varies with the variant and added procedures; one study reported about 192 minutes for SMAS plication and 188 for SMAS-ectomy |
May run longer because the dissection is more extensive; varies by surgeon |
|
Swelling and recovery |
Similar to deep plane in a prospective cohort, with median recovery of 25.5 and 30 days across the two groups |
Similar to SMAS plication in the same cohort, with no statistically significant difference |
|
Published complication rate |
Pooled hematoma rate of 2%; temporary nerve injury highest for high lateral SMAS at 1.85% |
Pooled hematoma rate of 3%; major hematoma of 1.22% (OR 1.67 vs. SMAS plication) |
|
Evidence for longevity |
Durable outcomes reported; long-term head-to-head data remains limited |
Not shown to provide significantly improved longevity over SMAS techniques in a systematic review |
Table data draws on Vayalapra et al., 2025, Jacono et al., 2019, Gibstein et al., 2021, Neel et al., 2026, and the systematic review discussed in the evidence section below.
How a SMAS Facelift Tightens the Layer From Above
"SMAS facelift" describes a family of techniques. Meta-analytic data separates them because each variant handles the layer differently and carries its own complication profile.
- SMAS plication: The SMAS is folded onto itself with sutures and suspended, without cutting through or elevating the layer.
- SMASectomy and imbrication: A strip of SMAS is excised, and the cut edges are brought together or overlapped and secured to tighten the layer along a chosen direction.
- High lateral SMAS: The incision into the SMAS sits higher, near the zygomatic arch, and the layer is raised as a flap. This placement may give the surgeon more influence over cheek tissue than a lower approach allows.
Each variant has a distinct risk pattern. In a meta-analysis of 183 studies, Jacono et al., 2019 found temporary facial nerve injury was highest for high lateral SMAS at 1.85% and composite rhytidectomy at 1.52%, while permanent nerve injury did not differ among techniques. SMAS imbrication carried the highest major hematoma rate, at 1.92%.
Outcome data supports the SMAS variants as well. Using neural networks to estimate apparent age one year after surgery, Gibstein et al., 2021 reported age reductions of 5.85 years for SMAS-ectomy and 5.35 years for SMAS plication, compared with 2.95 years for skin-only lifts. Adding fat grafting was associated with 2.1 more years.
How a Deep Plane Facelift Releases the Retaining Ligaments Beneath It
A deep plane facelift enters the sub-SMAS plane and carries the dissection medially, past the zygomatic, masseteric, and mandibular ligaments. Over much of the cheek, the skin stays attached to the SMAS, so both layers are lifted together as a composite flap.
Ligament release is the mechanism behind midface repositioning. Once the zygomatic ligaments are freed, the malar fat pad can travel upward with the flap. Releasing the mandibular attachments may allow the jowl to move along a similar vector, and because the deeper layer carries the lift, tension on the skin itself can be lower.
Composite rhytidectomy, a related approach, extends the flap to include the orbicularis oculi muscle around the lower eyelid. With any sub-SMAS work, the trade-off is closer proximity to facial nerve branches, which makes surgical training and anatomic precision central to safety.
What the Peer-Reviewed Evidence Says About Deep Plane Longevity
Current peer-reviewed evidence has not shown that deep plane surgery lasts longer than SMAS techniques. A 2025 systematic review of 17 studies in Plastic and Reconstructive Surgery concluded that medially based deep plane techniques, which carry dissection beyond the retaining ligaments, have not been shown to provide significant improvement in midface appearance or longevity of results.
Safety appears broadly comparable. A meta-analysis of 47 studies and 10,766 patients in Annals of Plastic Surgery reported hematoma rates of 3% for deep techniques and 2% for SMAS facelifts, with most nerve injuries temporary. Its authors noted that inconsistent outcome measures prevent firm conclusions about relative efficacy, although some evidence hints at a possible midface advantage for deeper approaches.
Other widely shared figures deserve careful reading. A one-arm meta-analysis in Aesthetic Plastic Surgery found satisfaction of 94.4% for deep plane and 87.8% for SMAS, with overall complication rates of 17.2% and 10.3%, but the two groups were drawn from separate studies, so the comparison is indirect. Long-term data is also thin. In a 2026 cohort study, deep plane patients went a mean of 10.9 years before a revision facelift, though the study included no SMAS comparison group.
Which Technique Fits Your Anatomy: Skin Laxity, Midface Descent, and Tissue Weight
Technique selection depends on where facial changes are concentrated. A careful exam distinguishes loose skin from descended cheek tissue, heavy tissue from thin tissue, and sagging from volume loss, since each finding may point toward a different plan.
General patterns surgeons often weigh include:
- Skin laxity with minimal midface descent: When the main concern is loose skin along the jawline and neck, SMAS plication or SMASectomy may address it with a less extensive dissection.
- Noticeable midface descent and deep nasolabial folds: Cheek tissue that has slipped well below the cheekbone may respond better to an approach that reaches it, such as a deep plane or high lateral SMAS technique.
- Heavy or thick soft tissue: Heavier tissue can resist superficial tightening, and some surgeons prefer releasing the ligaments so the deeper layer supports the weight.
- Thin skin and volume loss: Hollowing in the cheeks or temples may call for facial fat grafting alongside the lift, since lifting alone does not restore lost volume.
- Prior facelift surgery: Scar tissue from earlier procedures can alter the tissue planes and influence which approach is feasible.
- Neck banding: Visible platysmal bands may call for neck lift techniques in addition to the facial approach.
No single finding dictates the answer. An in-person evaluation by a board-certified plastic surgeon who performs more than one technique remains the most useful guide, and the ASPS offers a helpful procedure overview to review beforehand.
How Dr. Lampert Chooses Between Deep Plane and SMAS Techniques in a Miami Consultation
Dr. Lampert performs the deep plane facelift along with traditional facelift, mini facelift, neck lift, and facial fat grafting, so every consultation for a facelift in Miami can start from the patient's own anatomy. His background in sculpture and the visual arts informs how he studies proportion, and he often meets with patients several times before a plan is finalized.
Factors that commonly guide the choice include:
- Where the cheek fat sits relative to the cheekbone, and how much repositioning it may need
- How firmly the retaining ligaments tether the jowl and midface
- Skin thickness and quality, which affect how tissue drapes after lifting
- Whether volume loss calls for fat grafting during the same procedure
- Neck anatomy, including platysmal banding
Some decisions continue in the operating room, where tissue quality and the way the flap moves along its planned vector can refine the approach. Procedures take place at Miami Surgery, LLC, one of only three AHCA-certified ambulatory surgery centers in Miami-Dade County dedicated exclusively to plastic surgery.
Questions About Deep Plane or SMAS Facelift Surgery? Dr. Lampert Is Here to Help
Choosing a facelift technique is a decision that benefits from time and honest information. Dr. Lampert is certified by the American Board of Plastic Surgery, serves as a Clinical Assistant Professor of Surgery at FIU Herbert Wertheim College of Medicine, and is an editorial reviewer for Annals of Plastic Surgery.
To learn whether a deep plane or SMAS-based facelift in Miami may suit your anatomy and goals, schedule a consultation with Dr. Lampert at Lampert MD Plastic Surgery.
This information is provided for educational purposes only and does not replace a consultation with a board-certified plastic surgeon. Outcomes, risks, and suitability vary from patient to patient.
Sources
- StatPearls: Cervicofacial Rhytidectomy, NCBI Bookshelf
- Demystifying Deep Layer Face-Lift Techniques: A Systematic Review of SMAS Techniques, Plastic and Reconstructive Surgery, 2025
- Comparing the Safety and Efficacy of SMAS and Deep Plane Facelift Techniques, Annals of Plastic Surgery, 2025
- A Meta-Analysis of Complication Rates Among Different SMAS Facelift Techniques, Aesthetic Surgery Journal, 2019
- The Deep Plane versus SMAS Facelift: A Systematic Review and Meta-Analysis, Aesthetic Plastic Surgery, 2025
- Facelift Surgery Turns Back the Clock, Aesthetic Surgery Journal, 2021
- Deep Plane Versus SMAS Plication Facelift: A Prospective Cohort Study, Aesthetic Plastic Surgery, 2026
- Thirty Years of Deep Plane Facelifts: Characterizing Outcomes and Longevity, 2026
- ASPS: Facelift, American Society of Plastic Surgeons
