Corner Lip Extension is a procedure that widens the horizontal width of the mouth corners outward, creating a longer, fuller smile line. However, Corner Lip Extension is not a standalone procedure performed on its own. Instead, it is carried out by adding the option of 'widening the corners sideways' to the foundational Corner Lip Lift process, which lifts drooping corners and restores left-right balance. In other words, by building on the correction that realigns the position and balance of the mouth corners while also extending the horizontal width, both the upward and sideways changes are completed in a single procedure.
What Is Corner Lip Extension?

Corner Lip Extension is a procedure that widens the tips of the mouth corners outward to create a new mouth corner line. When the horizontal width of the mouth is short, making the smile line look small or flat, the corners are naturally extended sideways to complete a more open and well-defined smile line.
Despite the similar name, it differs in direction from Corner Lip Lift (lifting). Whereas Corner Lip Lift lifts the mouth corners 'upward' to address drooping and asymmetry, Corner Lip Extension stretches the corners 'sideways' to widen the horizontal width. Since only the direction differs and both address the same mouth corner area, the procedure is performed together within a single surgical process rather than separately.
Corner Lip Extension Is Not a Standalone Procedure, but an 'Option' Within Corner Lip Lift
Corner Lip Extension is not an independent procedure that widens only the mouth corners sideways on its own. At Dr.Tak Plastic Surgery, Corner Lip Lift (the foundational process of lifting drooping corners and balancing the left and right sides) serves as the base, and when widening of the horizontal width is needed, 'Corner Lip Extension' is performed together as an additional option.
There is a reason for this approach. If the horizontal width is widened while the position of the mouth corners (drooping, asymmetry) is left unchanged, the smile line can easily look unnatural. By first realigning the position and balance of the mouth corners and then adding horizontal width on top, the upward and sideways changes blend together naturally. The fact that both changes can be achieved within a single anesthesia and recovery period is another advantage.
For this reason, even during consultation, rather than considering 'extension alone' on its own, we use Corner Lip Lift as the foundation and diagnose together whether the extension option is needed in order to design the plan.
If Your Mouth Looks Small Relative to Your Face
If your face is on the larger side but your mouth looks small, or if your smile line appears small even when you smile and lacks an open impression, your overall look may seem somewhat stifled and monotonous. In some cases, the mouth corners are drawn inward when the lips are closed, so expressions do not come across distinctly.
In particular, after facial contouring surgery or cheekbone (zygoma) surgery, the proportions of the facial skeleton change and the mouth can come to look comparatively smaller. In such cases, extending the horizontal width of the mouth with Corner Lip Extension can rebalance the smile line to match the altered facial proportions.
When Corner Lip Extension May Be Needed
- Those whose short mouth corners make the smile line look monotonous and flat
- Those whose face is on the larger side but whose mouth looks small
- Those whose mouth corners sit inward when the lips are closed, giving a stifled impression
- Those whose mouth has come to look comparatively smaller after facial contouring or cheekbone surgery
- Those who want to widen the horizontal width in addition to Corner Lip Lift
- Those who want the mouth corners to remain distinct even when the lips are slightly parted
Dr.Tak's Core Principle: Harmony With Facial Proportions
In Corner Lip Extension, the most important factor is the relationship between the horizontal width of the mouth and the overall proportions of the face. Extending too much looks unnatural, while extending too little produces a negligible effect. Through 1:1 precision consultation, Dr.Tak Plastic Surgery comprehensively analyzes the face shape, lip thickness, philtrum length, and the underlying form of the smile line to design the most harmonious extension width. The goal is not simply to enlarge the mouth, but to find the smile line that blends most naturally within the face.
Results Dr.Tak Avoids
Corner Lip Extension is a delicate procedure in which the degree and the design determine the outcome. Dr.Tak Plastic Surgery designs carefully to avoid the following unnatural results.
- Excessively stretched mouth corners — a case in which the mouth is overly widened sideways, looking unnaturally torn. We design within an appropriate range that takes facial proportions into account.
- Blunt or awkward corner tips — if the newly created corner tips are not finished sharply, they can look unnatural. We meticulously design the curve at the boundary of the mucosa and skin to create a natural end line.
An Honest Word About Scarring
In Corner Lip Extension, the incision line is located on the outer (skin) side, beyond the natural mouth corner. For this reason, scar care is especially important compared with other lip procedures that incise the inside of the mouth. Dr.Tak makes a precise incision along the boundary between the mucosa and skin and minimizes scarring with micro-suturing, but scars cannot be entirely absent. Instead, systematic post-surgical care helps them fade over time.
How the Procedure Is Performed
Corner Lip Extension is performed together within the Corner Lip Lift process. The flow uses the correction that realigns the position of the mouth corners as its foundation, while adding the widening of the horizontal width.
- 1:1 Precision Consultation & Design — We analyze the face shape, horizontal width of the mouth, lip thickness, and philtrum length to design a natural extension width and a new mouth corner line. We also review any history of past procedures such as contouring or correction.
- Safe Anesthesia — The procedure is performed under local anesthesia to minimize burden.
- Precise Incision & Line Extension — We make a precise incision along the mucosa-skin boundary at the tips of the mouth corners and naturally extend the corner line outward.
- New Corner Formation & Micro-Suturing — We create the new corner tips with a gradual curve and finish with precise suturing that minimizes scarring. Because this is performed together with Corner Lip Lift within a single process, both the upward and sideways changes are achieved in one anesthesia and recovery period.
Recovery Process and Downtime
There are individual differences, but the typical course is as follows.
- Suture removal: Usually removed about 7 days after surgery.
- Swelling and bruising: Major swelling generally begins to subside within 7 to 10 days.
- Eating and speaking: Because the incision line is on the outer side of the mouth corners, there may be some discomfort with eating or speaking during the recovery period, but daily life is possible.
- Scar maturation: The final quality of the scar depends greatly on care over the 3 to 6 months following surgery, and it gradually fades over time.
For the precise recovery schedule and precautions, please follow the guidance of the medical team after surgery.
Post-Surgical Scar Care Guide
Because Corner Lip Extension involves an incision on the skin side, scar care has a particularly large impact on the outcome. (Detailed methods are explained in person at your visit.)
- Sun protection: Scars on the skin side are prone to pigmentation when exposed to UV rays. During recovery, please pay particular attention to sun protection.
- Taping: Taping in a direction that draws the incision line together helps with scar care. It is generally recommended for 3 to 6 months and should be discontinued if dermatitis develops.
- No smoking: Smoking is very detrimental to scar healing. We recommend refraining from smoking for 6 months if possible, and for at least 3 months.
- Massage: Once you have entered the recovery phase, gently massaging along the incision line may help.
- Raised scar care: If a scar becomes hard or protrudes, it can be managed with injection treatment and similar options.
Procedures That Pair Well for Synergy
Corner Lip Extension is an option performed together within the Corner Lip Lift process. Adding the procedures below can further enhance the overall balance and dimensionality of the smile line.
- Lateral Lip Lift: Refines the outer line of the upper lip so it connects more naturally with the widened smile line.
- Lip Lift: Shortens the philtrum length to balance the entire smile line.
- Lip augmentation (mucosal advancement): Adds volume to the upper lip, giving fullness to the widened smile line.
Which combination is suitable depends on the condition of your smile line and your facial proportions, and is determined through consultation.
We Recommend This For
- Those whose short mouth corners make the smile line look monotonous and flat
- Those whose mouth looks small relative to their face, giving a stifled impression
- Those whose mouth has come to look comparatively smaller after facial contouring or cheekbone surgery
- Those who want a more open and well-defined smile line
- Those who want a three-dimensional change by adding horizontal width to Corner Lip Lift
An Honest Word About Expected Effects and Limitations
The results of Corner Lip Extension vary from person to person depending on the basic size of the mouth, the skeletal structure, and the condition of the skin and mucosa. Extending too much can actually look unnatural, so Dr.Tak designs within an appropriate range matched to facial proportions. In addition, because the incision line is located on the skin side, the degree of scarring and the speed of recovery also vary from person to person, and the outcome depends on post-surgical care.
Dr.Tak comprehensively analyzes the smile line and facial proportions to recommend the most suitable extension width, and helps you decide after fully explaining the expected effects and limitations.
