Deep Plane Facelift vs SMAS: What the Evidence Actually Shows

Both deep plane and SMAS facelifts give high satisfaction in published studies, and neither has been proven to last longer. A 2025 meta-analysis of 47 studies (10,766 patients) found similar safety for both. It also found that only one study compared their results directly, so it could not say which one works better (Annals of Plastic Surgery, 2025). The surgeon's skill and your anatomy matter more than the label.

What the two techniques are

A facelift lifts the deeper tissues of the face and then redrapes and trims the skin. ASPS describes a traditional facelift as lifting the deeper layers of the face and muscles, then trimming the extra skin (ASPS). The difference between techniques is how the surgeon handles the SMAS (superficial musculoaponeurotic system). This is a thin layer of tissue and muscle under the skin and fat.

• SMAS facelift is a family of techniques. The surgeon lifts the skin, then tightens the SMAS from above by folding and stitching it (plication), cutting out a strip and closing the gap (SMASectomy), or lifting a flap of it (Journal of Clinical Medicine, 2025).
• Deep plane facelift goes under the SMAS, so skin and SMAS move together as one flap. The dissection happens in the layer that holds the facial retaining ligaments (Journal of Clinical Medicine, 2025). Sam Hamra first described it in 1990 (Aesthetic Plastic Surgery, 2026).

The deep plane facelift is not new, despite how it is marketed. A 2025 review notes that its origins go back 35 years, and many surgeons now use their own versions of it (Journal of Clinical Medicine, 2025). The same review notes that even the anatomy is debated. Some researchers question whether the SMAS is one distinct layer at all.

Deep plane vs SMAS at a glance

Satisfaction and the first complication figures are from a 2025 meta-analysis of 21 studies with 2,896 patients (Aesthetic Plastic Surgery, 2025). The 6.6% figure is from a 2026 deep plane-only meta-analysis (Aesthetic Plastic Surgery, 2026). These pooled numbers mostly come from separate groups of patients, not head-to-head trials.

What the comparisons show

Results

The best early evidence is surprisingly old and small. In a 1996 study, 21 patients had a different technique on each side of the face. Right after surgery, the more extensive side looked better in the midface. Within 24 hours, once swelling set in, the difference was gone. Experienced surgeons rating photos could not tell the sides apart at 6 and 12 months (Plastic and Reconstructive Surgery, 1996). The authors concluded that the "increased surgical risks, morbidity, and convalescence" of the more extensive operations "do not seem to be warranted in the average patient." That was a small study of older methods, and today's deep plane surgeons would dispute its relevance. But no larger trial has replaced it. A 2007 study of eight sets of identical twins also found no single technique superior when matched to the right patient (Plastic and Reconstructive Surgery, 2007).

Newer reviews lean slightly toward deep plane on looks. A 2026 meta-analysis of 45 studies (10,784 patients) reported better aesthetic improvement with deep plane, but noted the ratings were subjective (Aesthetic Plastic Surgery, 2026). A 2026 study used AI software to estimate age in before-and-after photos of 200 women. It found no difference in apparent age reduction between deep plane and SMAS (PRS Global Open, 2026).

Safety

• Nerve injury: Across 67 studies and more than 15,000 facelifts, motor nerve injury was about 0.66%, and permanent motor injury about 0.05% (Aesthetic Plastic Surgery, 2025). A 2019 meta-analysis of 183 studies found higher temporary nerve weakness with high lateral SMAS and composite lifts than with SMAS plication. Permanent injury did not differ between techniques (Aesthetic Surgery Journal, 2019).
• Hematoma (a blood collection): The same 2019 analysis found a higher major hematoma rate with deep plane (1.22%) than with plication. A 2025 meta-analysis reported hematoma in 3% of deep plane and 2% of SMAS facelifts (Annals of Plastic Surgery, 2025).
• Head-to-head: In a 2026 prospective study of 166 patients by one surgeon, complications (21.6% deep plane vs 28.7% SMAS plication), temporary nerve weakness (11.1% vs 12.4%), satisfaction and recovery time did not differ significantly. Follow-up was only about 3 months (Aesthetic Plastic Surgery, 2026).

Where the evidence is thin

Be careful with any claim that one technique "lasts 10 to 15 years" or is "the gold standard."

• A 2011 systematic review found only 10 articles that directly compared how well facelift techniques work. It called for randomized, standardized studies (Plastic and Reconstructive Surgery, 2011). That gap has not closed.
• Most comparisons are case series from single surgeons who prefer one method. The lead author of the 2019 complication meta-analysis is widely credited with repopularizing the deep plane facelift (Journal of Clinical Medicine, 2025).
• We found no good long-term trial showing that either technique keeps its result longer.
• Complication definitions differ, which is why overall rates range from 6.6% to 17.2% for the same technique.
• Durability has been questioned before. A 2025 review notes that Hamra himself later called his early deep plane version a "short-term improvement but long-term disappointment." The technique has been changed many times since (Journal of Clinical Medicine, 2025). That says nothing about today's versions either way, which is exactly the problem: the long-term data is missing.

Recovery

The NHS says a facelift takes about 2 to 4 weeks to recover from, with bruising for at least 2 weeks. The full effect can take 6 to 9 months. A numb or swollen face can last weeks to months (NHS). ASPS says most people are presentable in 10 to 14 days. It takes 2 to 3 months for the face to feel "back to normal" (ASPS). Some deep plane surgeons say their versions shorten recovery (Journal of Clinical Medicine, 2025). In the 2026 head-to-head study, median recovery was 30 days for deep plane and 25.5 for SMAS plication, which was not a significant difference.

Questions to ask your surgeon

• Which technique do you use most, and how many have you done?
• Why is it right for my face (jowls, neck, midface, skin quality)?
• What are your own rates of hematoma and nerve weakness?
• Can I see results at least 2 to 5 years after surgery, not only at 3 months?
• What would a revision involve if I need one?

More questions are in our plastic surgeon checklist.

Having a facelift abroad

ASPS suggests waiting 7 to 10 days after facial cosmetic procedures before flying (ASPS). Hematoma is one of the main early risks with both techniques, so stay close to your surgeon for the first days and keep every early check-up. Get your operative report in English, including which technique was used. A future surgeon will need it for any revision. See our guides to a facelift in South Korea and a facelift in Turkey. U.S. prices are on our facelift cost page.