2026-07-21
Apgujeong Square Jaw: When You Want a Slim Jawline
Discover how SNU Plastic Surgery in Apgujeong can help you achieve a slimmer jawline, addressing square jaw concerns with non-surgical options like Botox and fillers, or surgical solutions for more severe cases.


Hello. We are SNU Plastic Surgery Clinic, offering square jaw treatments and surgeries in Apgujeong.
A ‘square jaw’ refers to an angular jaw. The ideal jawline is typically a V or U shape. However, many people, including our family, friends, and colleagues, are born with a very prominent angular jaw due to genetics.
Among celebrities, Ahn Moon-sook and Park Kyung-lim are known for having angular (square) jaws. Even to the naked eye, their features are well-defined, but their overly angular jaws create a very fierce and masculine impression.

For this reason, most people who came to us wanting to transform their square jaw into a slimmer jawline were women rather than men.
However, concerns about square jaws are not exclusive to women. Recently, male clients have also sought jawline correction at SNU Plastic Surgery Clinic, as a square jaw can negatively impact one's impression and even overshadow handsome features.
Besides genetics, a square jaw can also develop later in life if one frequently consumes foods that require excessive jaw strength, such as candies or gum, during childhood before the skeletal structure is fully formed. Most adults who have a square jaw acquired it due to such lifestyle habits.

Non-Surgical Methods for Square Jaw
In today's appearance-focused society, both men and women pay a lot of attention to their looks.
If something feels off, people usually seek consultation at a plastic surgery clinic. A prominent jawline is a concern that offers no benefits, so in such cases, SNU Plastic Surgery Clinic in Apgujeong offers various non-surgical and surgical options for square jaw correction.
Most individuals with a mild square jaw can benefit from Botox and fillers at our clinic.
Both treatments are commonly used to improve jaw contour or refine the face shape.


Square Jaw Botox
Botox is undoubtedly the treatment with the best prognosis.
Many clients regularly visit us for Apgujeong square jaw treatments. For those with a square jaw, Botox injections reduce the size of the jaw muscles, specifically the masseter muscles, making the jawline appear slimmer. It is also effective for improving square jaws caused by muscle development.
Furthermore, by reducing the strength of the chewing muscles, it can also help alleviate teeth grinding. The principle involves injecting a small amount of Botox into the muscle, causing it to gradually shrink. The duration of effect varies among clients but averages about 6 months.

Square Jaw Fillers
While rare, square jaw fillers can be used to slightly lengthen the chin.
At our clinic, fillers can add volume to the jaw, gently refine the contour, sharpen the chin, correct some asymmetry, enhance the V-line, and make the face appear slimmer.
Hyaluronic acid fillers are injected under the skin, providing immediate volume unlike Botox. While Botox is often preferred for its quick return to daily life after treatment, fillers are also used depending on the client's square jaw case.

So, should I choose filler or Botox? You know you have a square jaw, but you might be unsure which treatment to get.
At SNU Plastic Surgery Clinic in Apgujeong, after seeing various types of clients, we recommend square jaw fillers for those with a short or asymmetrical jaw, a rounded or blurry jawline, or those who desire facial contour improvement without significant changes.
Square jaw Botox is suitable for those whose square jaw is due to developed jaw muscles, who wish to improve a wide and strong facial impression, or who want to refine their facial contour using non-surgical methods.

When is Surgery Necessary?
About 9 out of 10 clients seeking square jaw improvement at SNU Plastic Surgery Clinic achieve results with Botox.
However, in exceptional cases, the square jaw may be particularly severe, exceeding the extent of simple muscle development or structural development of the jaw. Specifically, if the facial contour is asymmetrical due to bone structure issues, or if the jaw appears excessively wide or angular, surgical methods are considered.
We understand that a detailed explanation of surgery might be overwhelming for clients. Therefore, we prioritize providing comfortable and reasonable treatments that allow clients to return home easily. So, if you wish to achieve a slimmer jawline, please visit SNU Plastic Surgery Clinic.


















Frequently Asked Questions
Why do square jaws develop?
Square jaws can be congenital due to genetic factors, or they can develop later in life due to habits like frequently eating foods that require a lot of jaw strength, such as candies or gum, during childhood. These lifestyle habits can also be a cause in adulthood.
What are the effects of square jaw Botox?
Square jaw Botox reduces the size of the masseter muscles (jaw muscles), making the jawline appear slimmer. It also helps alleviate teeth grinding by reducing the strength of the chewing muscles. The effects typically last for about 6 months after the procedure.
When is it advisable to use square jaw fillers?
Square jaw fillers are suitable for cases where the chin is short or asymmetrical, or the jawline appears rounded or blurry. They can be used to add volume to the chin, gently refine the contour, correct asymmetry, and enhance the V-line.
Which treatment, Botox or filler, should I choose?
If your square jaw is due to developed jaw muscles or if you want to improve a wide and strong facial impression, Botox is suitable. On the other hand, if your chin is short or asymmetrical, your jawline is blurry, or you desire facial contour improvement without significant changes, fillers are more appropriate.
When is square jaw surgery considered?
Square jaw surgery is primarily considered for severe cases where the square jaw is particularly pronounced, such as when the facial contour is asymmetrical due to bone structure issues, or the jaw appears excessively wide and angular. In most cases, improvement can be achieved with Botox.