When the area under the chin thickens and the cheek line loses its definition, many people find it concerning because it makes their face look heavy, even when they haven't gained weight. This change is often not just a matter of fat, but is commonly caused by a drop in skin elasticity.

To give you a quick answer, InMode FX excels at tightening loose skin by heating the dermis with high-frequency thermal energy, making it helpful for improving a sagging jawline and drooping cheek line. However, since it is not a treatment designed to significantly reduce thickly accumulated fat itself, you should align your expectations depending on whether your concern is a loss of elasticity or excess fat.

> This content compiles treatment information from Beauty stone Hapjeong.

By reading this post, you will

• Understand the structural reasons why a double chin and sagging cheek lines develop

• Learn the scientific principles of how InMode FX works on skin elasticity

• Be able to compare its limitations and differences with other treatments

• Distinguish who is a good candidate for InMode FX and who is not

First, why a double chin and sagging cheek lines develop

The area under the chin and the cheek line are shaped by both the subcutaneous fat* beneath the skin and the skin that covers it. As we age or undergo repeated weight fluctuations, the volume of this fat changes while skin elasticity simultaneously declines, leading to a blurred jawline and sagging cheeks.

Subcutaneous fat*: The layer of fat situated right under the skin. When its volume changes along with skin elasticity, it translates into a double chin or changes in the cheek line.

Therefore, even for the same double chin, the approach differs depending on whether fat is the primary culprit or whether a loss of skin elasticity is the main cause. High-frequency devices like InMode FX address the elasticity aspect. Just like the report stating that monopolar radiofrequency is a standard method for improving skin elasticity by heating the dermis to stimulate collagen, it works on the principle of replenishing collagen through thermal energy.

How InMode FX works

InMode FX works by delivering radiofrequency (RF) energy to the skin, heating the dermis and its underlying tissues up to a target temperature. The heated collagen contracts, immediately tightening the skin, and over the following weeks, new collagen builds up to gradually lift and restore elasticity.

Hence, InMode FX is highly suitable when your primary concern is a loss of elasticity, such as a blurred jawline or slightly sagging cheek lines. Since the results build up gradually over several weeks rather than appearing all at once, most people schedule multiple sessions to see progressive changes. It is helpful to know beforehand that this is not a treatment designed to directly melt away thick layers of fat.

Limitations and comparison with other treatments

Treatments for double chins and sagging cheek lines target different issues. Your choice will depend on whether your main concern is fat or elasticity, as summarized below.

As shown in the table, InMode FX is strong in improving elasticity. If fat is the primary concern, a different approach might be more effective. If you have both concerns, a combination of treatments can be planned sequentially.

Why Beauty stone Hapjeong?

At Beauty stone Hapjeong, we start our double chin consultations by determining whether the cause is fat or elasticity. Even for the same description of "having a thick double chin," it can be a combination of excess fat and sagging skin. Rather than pushing a single treatment, we prefer step-by-step planning to find the method that fits your unique condition first. As a cozy clinic located close to Hapjeong Station, we can monitor how your skin's elasticity recovers and guide you on the ideal timing for your next session.

Who is a good fit for InMode FX & Precautions

InMode FX is highly recommended for those who match the following:

• Those whose jawline has blurred without significant weight gain — cases where a loss of elasticity is the main cause

• Those who want natural changes without surgery or intensive procedures

• Those who want to minimize downtime and return to daily life quickly

• Those who are comfortable with a slow-paced, multi-session treatment plan

On the other hand, if thick fat is your primary concern, you may feel the changes are minimal with RF alone. Mild redness or a warm sensation right after the procedure usually subsides within a day, but if swelling or discomfort persists, please consult with your treating medical team. This content is for general information purposes only; it is safest to consult with a medical professional to determine if this treatment is right for you and to decide on the number of sessions.

Frequently Asked Questions

Q. Does InMode FX reduce double chin fat?

A. InMode FX focuses more on tightening loose skin rather than directly melting fat. If excess fat is the primary issue, you might notice only subtle changes, so it is highly recommended to identify the root cause of your concern first.

Q. How many sessions are needed to see results?

A. While some tightening can be felt even after a single session, the results become much more pronounced when you receive multiple sessions spaced several weeks apart. The recommended number of sessions varies depending on your skin condition, so it is best decided during your consultation.

Q. Can I return to daily life immediately after the treatment?

A. Yes, downtime is very minimal, so most people return to their routine on the same day or the next day. However, mild redness or swelling may remain, so if you have an important event, it is wise to allow a few days of buffer time.

Q. Can I get it together with fat dissolving injections?

A. Yes, many people plan a combined approach, targeting fat with dissolving injections and skin elasticity with RF. However, whether they can be performed on the same day and the exact order of treatment depend on your skin condition, so please decide after consulting with our medical team.

Further Reading

• Will my double chin fat return once I lose weight after getting fat dissolving injections?

• [Double Chin DCA Injections vs. Ultherapy: Is it excess fat or loss of elasticity?](https://beautystone1.com/blog/double-chin-fat-dissolving)

• Double chin Botox: Why you should check your salivary glands before considering liposuction

• Buccal fat dissolving injection effects: Why simply reducing the volume can lead to more sagging