Jawline Sagging: A Complete Guide to Causes and the Principles and Progress of Improvement Treatments
Jawline sagging refers to a change in facial contour where reduced elasticity in the cheek and jaw tissue, along with weakened supporting layers, causes the jawline to blur and droop downward. Ultrasound and radiofrequency lifting devices, which aim to stimulate elasticity in the deeper layers, along with thread lifting, which physically lifts sagging tissue, are used with improvement as the goal. Which treatment is suitable depends on the degree of sagging and skin condition, so it is necessary to determine this through consultation with a specialist.
If your jawline no longer looks as defined as it used to when you check the mirror, or the boundary between your cheek and jaw appears blurred when viewed from the side, jawline sagging may be a possibility to consider. Jawline sagging is less a specific medical condition and more a contour concern related to changes in the elasticity of the skin and supporting tissue.
This article covers, in order, why jawline sagging occurs, what principles underlie the treatments used with improvement as the goal, what the recovery process and downtime look like after treatment, and what to pay attention to in home care during the recovery period.
Why Does Jawline Sagging Occur?
Jawline sagging often occurs as the tissue around the cheeks and jaw loses elasticity and moves downward, causing the line to lose its definition. As part of the aging process, it is known that not only the skin's own elasticity but also the strength of the dermis and subcutaneous tissue that support the skin weaken together, which is considered a major underlying factor.
In this process, as tissue sags below the jaw, the line becomes blurred, and even without an actual change in body weight, the jaw area can give an impression of heaviness and looseness. Everyday postural habits and weight changes are also mentioned as factors that can influence the appearance of the jawline.
Because this change usually progresses gradually, many people don't notice it themselves until they see it in a photo or from a side profile view.
Improving Jawline Sagging: What Principles Do the Treatments Use?
Treatments aimed at improving jawline sagging can broadly be divided into two categories. One uses thermal energy to stimulate elasticity in the deeper layers, and the other uses threads to physically lift sagging tissue.
Radiofrequency (RF) and ultrasound-based lifting devices are explained as working by generating heat in skin tissue to induce immediate contraction of dermal collagen, while also stimulating fibroblasts to trigger a response of new collagen production and remodeling. Representative lifting devices used in Korea include Ulthera, Shurink Universe, and InMode, and each device differs in how it delivers energy and at what depth.
Ulthera and Shurink Universe use ultrasound energy to deliver stimulation to the deeper layers, aiming to support the tightening of sagging jawline and cheek elasticity, while InMode uses radiofrequency and is used to support elasticity and contour refinement around the jaw.
Thread lifting takes a different approach, using threads to physically lift sagging jawline tissue in order to refine the line. Because cheek and jawline thread lifting directly lifts the tissue itself, its mechanism differs from thermal energy-based treatments, and it may also be considered together with those treatments in cases of relatively pronounced sagging.
However, these responses can vary depending on an individual's skin condition, age, and degree of sagging, and it is known that immediate improvement should not be assumed, so treatment selection should be determined through consultation with a specialist.
When Results Become Noticeable and Downtime
For lifting treatments that use thermal energy, the final change is reported to typically appear gradually over about 2 to 3 months after the procedure, rather than immediately afterward. This is explained by the fact that collagen production and remodeling require a certain amount of time.
Since thread lifting works by physically lifting tissue, it is relatively aimed at more immediate changes to the line, but the degree to which this is noticeable can also vary depending on an individual's skin thickness and degree of sagging.
In terms of downtime, depending on the type of treatment, there may be brief swelling, tingling, or mild tenderness. Since the time it takes to return to daily activities varies significantly between individuals, it is advisable to receive guidance on the expected recovery period through consultation before the procedure.
Why Skin Care Matters During the Post-Procedure Recovery Period
Right after a lifting procedure, temporary redness or sensitivity caused by thermal energy may appear, and after thread lifting, the skin's surface may be somewhat more sensitive to stimulation. Since the skin barrier may be temporarily weakened during this period, care that reduces irritation and replenishes moisture can be helpful alongside the treatment.
During the recovery period, home care is generally recommended to focus on two pillars: soothing and moisturizing. In particular, over the several months during which collagen production and remodeling gradually take place, helping the skin maintain a stable condition can be meaningful from a care perspective.
Comparing Jawline Sagging Treatments
The ultrasound-based Ulthera and Shurink Universe aim to support tightening through stimulation of elasticity in the deeper layers, with a relative focus on delivering energy to those deeper layers. The radiofrequency-based InMode is used to support elasticity around the jaw and overall contour refinement.
Thread lifting takes the approach of directly lifting sagging tissue to fix the line in place, and it is sometimes used alongside thermal energy-based treatments. When reduced elasticity and sagging appear together, the two approaches may be considered in combination, but whether to combine them and in what order depends on the individual's condition, so it is best to determine this through consultation.
Home Care Makes a Difference in Post-Procedure Recovery
During the several months of collagen production and remodeling that follow a lifting procedure, the skin can be prone to sensitivity. During this period, it can help to manage care in stages: soothing and barrier care immediately after the procedure, followed by deep moisturizing care during the later recovery period. ABJU Cream is designed with this flow in mind, structured as a 2-STEP system: right after a lifting or thermal energy procedure, Ultra Cera-Rich focuses on soothing redness and barrier care, and afterward, during the recovery period, Hydro Re-Boosting continues with deep moisturizing care. That said, the product does not replace the procedure itself, and the degree to which effects are noticeable may vary by individual.
Medically reviewed by 아비쥬의원 의료진. (September 10, 2026)