Nasolabial folds, jowls, and a softened jawline are often assumed to result from volume loss.
In many cases, the actual cause is different: subcutaneous fat that hasn’t disappeared but has descended from its original position.
When the problem is displacement rather than loss, adding volume doesn’t resolve it.
At 4Ever Cheongdam Clinic, Dr. Younghan Seo explains how Silhouette Soft addresses this through structural repositioning, and what determines whether it’s the right treatment for a given patient.
Key Takeaways
Silhouette Soft uses patented 3D cones made from PLGA rather than the barbs found on conventional PDO threads, providing immediate fixation and sustained lifting force.
The PLLA thread component stimulates collagen production over time, adding a regenerative dimension to the mechanical lift.
The treatment is most effective when displaced fat is the primary concern, not absent fat or severely insufficient skin elasticity.
Silhouette Soft holds CE certification and US FDA approval, making it one of the few thread lift systems validated to international clinical standards.
Combining it with Ulthera, Thermage, or Ellansé addresses structural depth and volume in ways the threads alone cannot.
Why Fat Repositioning Matters More Than Volume Addition
The assumption that nasolabial folds and jowls form because fat has been lost leads many patients toward filler treatments that add volume where they perceive hollowing.
The clinical picture is often more nuanced.
Subcutaneous fat volume does not necessarily decrease with age in the lower face.
What changes is its position: fat pads that once sat higher on the face descend gradually, pooling in the nasolabial and jowl areas.
The result looks like hollowing above and excess below, but the underlying issue is displacement, not loss.
Adding filler to an area where the problem is descended fat can amplify the heaviness rather than correct it.
The more structurally appropriate response is to lift and reposition the displaced tissue back toward where it originally sat.
This is the mechanism Silhouette Soft is designed to address.
What Makes Silhouette Soft Different From Standard Thread Lifts
Conventional PDO thread lifts use barbed sutures to create traction in the tissue.
Silhouette Soft replaces barbs with proprietary 3D bidirectional cones, a design patented by Sinclair Pharma and exclusive to this system.
The cones serve two functions. At the time of placement, they provide immediate mechanical fixation of the lifted tissue.
Over the following months, the PLGA material from which they are made is gradually absorbed by the body, and the PLLA thread itself stimulates fibroblast activity and new collagen formation.
The result is both an immediate lift and a sustained improvement in tissue density as the collagen response develops.
The combination of instant correction and progressive biological stimulation is what distinguishes Silhouette Soft from thread systems that rely on mechanical action alone.
Who Is, and Is Not, a Suitable Candidate
Silhouette Soft produces its best results in a specific clinical context: patients who have enough subcutaneous fat to lift and whose skin retains sufficient residual elasticity to respond to repositioning.
When these conditions are met, the treatment can produce a meaningful and natural-looking improvement in facial contour.
Two groups tend to see limited benefit.
Patients with very little facial fat have less tissue for the threads to engage and reposition, which limits the achievable correction.
Patients with severe elasticity loss may find that the degree of improvement the threads can deliver is insufficient relative to their degree of laxity.
The ideal candidate is someone who has noticed that nasolabial folds and jowls have worsened over time, has visible facial fat that appears to have descended, and is looking for correction that addresses the structural cause rather than masking it.
Combining Silhouette Soft With Other Treatments
Silhouette Soft is effective at repositioning displaced subcutaneous fat, but it does not address the deeper SMAS fascial layer or the overlying skin surface directly.
For patients where multiple layers of the face need attention, combining it with complementary treatments improves the overall result.
With Energy-Based Devices
Ulthera targets the SMAS layer through focused ultrasound, tightening the deep structural foundation of the face.
Thermage delivers radiofrequency energy throughout the dermis, improving skin density and surface texture.
When either or both are combined with Silhouette Soft, the effect addresses the face at multiple depths: structure, repositioned tissue, and skin quality.
With Ellansé
Silhouette Soft lifts and repositions, but does not fully restore volume in areas where the face has become structurally deficient.
Ellansé, a PCL-based biostimulator, is used after the thread lift to add targeted volumetric restoration through collagen stimulation rather than simple filler placement.
Dr. Seo describes this as placing the finishing point after the lift has been established: the threads define the structural correction, and Ellansé completes the three-dimensional result.
Frequently Asked Questions
Q. When will I see results, and how long do they last?
A. The mechanical lift from the threads is visible immediately after treatment. Over the following three months, the tissue settles into its repositioned position and the collagen stimulation from the PLLA material continues to develop. On average, results are maintained for approximately one year, though this varies with the number of threads used, the design of the treatment, and individual tissue response.
Q. How often does the treatment need to be repeated?
A. A maintenance or reinforcement session is typically considered every three months to one year, depending on how the result has evolved and what the patient’s goals are. Some patients maintain their result with periodic touch-up sessions rather than waiting for the lift to fully resolve before retreating.
Q. I noticed some surface irregularity after my last thread lift elsewhere. Is that a side effect?
A. Surface irregularity or visible contour after thread placement is generally not classified as a side effect in the traditional sense. It is most often a technical outcome related to insufficient tension calibration or inadequate thread volume for the area treated. Silhouette Soft requires precise anatomical planning and careful tension management to avoid this, which is why operator experience and anatomical knowledge are the primary factors in outcome quality.
Q. How much does Silhouette Soft cost?
A. Pricing is approximately 500,000 KRW per thread, with the total depending on how many threads are used and how the treatment is designed for each patient’s anatomy. Clinics offering significantly lower pricing should be evaluated carefully, as the cost of the material itself is relatively fixed. Substantially discounted treatment often reflects differences in thread quality, operator experience, or both. For a treatment where design precision and anatomical understanding directly determine the result, who performs the treatment matters more than the price.
Q. Can Silhouette Soft be combined with my existing treatments on the same day?
A. In many cases, yes. Whether same-day combination is appropriate depends on the specific treatments involved, the patient’s skin condition, and the treatment plan. This is assessed at consultation. Dr. Seo frequently combines Silhouette Soft with Ellansé in the same session when the clinical situation calls for it.
Ready to discuss a treatment plan tailored to your skin?
4ever Cheongdam Clinic offers one-to-one consultations with Dr. Younghan Seo.