Thread lift vs. Incision surgery: How to choose? Guidelines based on degree of Sagging (skin laxity)

The decision hinges on the degree of Sagging (skin laxity) and how much time off you can take. For mild to moderate Sagging (skin laxity) with limited downtime, Thread lift is a candidate, but since the effects are modest and duration short, Japanese guidelines give it only a weak recommendation[1]. For those with excess skin and who want deep-layer lifting, incision Facelift becomes an option[2].

What's the fundamental difference between Thread lift and incision surgery?

The difference is whether you cut the skin and lift deep layers together, or pass thread under the skin to lift it. Thread lift, using barbed thread inserted through the skin to elevate facial and neck soft tissues, is described in textbooks as a minimally invasive technique.[2]Incision Facelift requires greater systemic burden but allows lifting from deep layers. Textbooks note that skin supporting heavy tissues stretches over time, so lifting based on skin alone loses effectiveness.[3].

How long do thread lift effects last?

With dissolving thread (PDO), approximately six months is the standard guideline.[4]Japanese guidelines state that while temporary improvement can be expected, effects are not large and duration is short, requiring thorough explanation; they place the recommendation level at 2 (weak recommendation).[1]The layer where thread is placed affects duration—insertion in highly mobile areas tends to cause protrusion or shifting, and facial movement interferes with fixation, shortening effect duration.[5].

How does thread material change outcomes?

Duration and how the material stimulates the skin change. PDO is the most widely used as a cog thread, providing both immediate lifting and collagen production stimulation during degradation.[5]PLLA is a material derived from lactic acid with the property of adding volume to sagging areas,[4]and there are multicenter randomized trial reports examining its effects and safety for mid-face volume deficit.[6]PCL is a newer monofilament thread showing different collagen interactions in animal studies compared to PDO and PLLA.[4].

Long-term research on skin remodeling with hyaluronic acid-coated copolymer thread has been reported.[7]Material name alone doesn't determine superiority, so it's more useful to ask what the goal was in the selection.

Does cog shape or number affect outcomes?

Yes, but there's no definitive answer yet. Reports indicate that advances in cog shape (U-shaped, I-shaped), thread thickness, and fixation technique have enabled more complex lifting in the mid-face and lower face.[8]Prospective studies using three-dimensional thread with bidirectional barbs in the mid-face and nasolabial fold have also been conducted.[9]For thread number, randomized controlled trials examining how effects change based on the number of PDO threads used have been performed.[10].

Large-scale long-term comparisons combining material, shape, and indication are still limited.[11]Therefore, selection still relies partly on individual facility experience.[11].

Can you proceed to incision surgery after thread placement?

Yes. Guidelines for perioperative management when transitioning to facial surgery after minimally invasive treatment have been proposed.[12]Since planning accounting for tissue reaction and adhesion is necessary, it's helpful to remember when, which thread material, and where it was placed.

Decision guidelines and what to confirm at consultation

Rough guidance: thread for mild Sagging (skin laxity) with limited downtime, incision for excess skin.[2][1]If you're in the uncertain range, trying thread first to gauge results is an option. For mid-face treatment combining hyaluronic acid and thread, research with favorable evaluation at 1 and 2 year timepoints exists.[13].

At consultation, ask for separate explanation of whether your Sagging (skin laxity) is a skin issue or deep-layer laxity. For thread selection, verify material, number, and expected duration numerically; for incision, verify recovery time—doing so helps align your judgment with the physician.