Drooping Corners of the Mouth: Why Do They Change Your Facial Impression? — The Real Story Behind Corner Lip Lifts

If you are often asked "Are you angry?" or "Why do you look so down?" even when your face is expressionless, the corners of your mouth are usually the cause. Mouth corner lifting collectively refers to procedures that raise sagging mouth corners upward to make the impression look softer and younger. Since a difference of just 1 mm in the center of the face determines the overall impression, more people than you think are concerned about this one area.

To start with the conclusion, sagging mouth corners are mostly caused by a combination of the strength of the muscles pulling the mouth corners down and a decrease in surrounding volume. Therefore, an approach to regain balance by controlling muscle strength and filling volume without using a knife is considered first. Onlif Clinic also views this concern not as changing the shape of the eyes, nose, and mouth, but as removing the aging that hides one's natural impression.

🔍 Why do the corners of the mouth sag?

Mouth corner sagging cannot be explained by a single cause. It is largely intertwined with four factors.

First, hyperactive muscles. If the **Depressor Anguli Oris (DAO)**, which pulls the mouth corners down, works stronger than necessary, the mouth corners will droop even with an expressionless face. Conversely, as the balance of power with the **Zygomaticus**, which raises the mouth corners when smiling, collapses, the sagging becomes more prominent.

Second, a decrease in the elasticity of the skin and soft tissues. As we age and tissues sag downward, the corners of the mouth also go down with them.

Third, volume loss and marionette lines. Marionette lines are wrinkles that run from the corners of the mouth down toward the chin, and the deeper these grooves are, the more sagging the mouth corners appear. When the volume around the mouth is lost, shadows are created, making the impression look petty.

Fourth, changes in teeth, occlusion, and skeletal structure. This part is closer to the fundamental structure rather than a procedure, so a separate evaluation is required.

📌 Key Summary: Mouth corner sagging is the result of four overlapping factors: muscles, elasticity, volume, and skeleton, so diagnosing the cause is first and foremost.

💉 How can it be improved non-surgically?

Methods to treat the corners of the mouth without using a knife are largely divided into the axis of controlling muscles and the axis of filling volume.

Botulinum toxin (Botox) weakens the strength of the DAO muscle. When the force pulling the corners of the mouth down is reduced, the zygomaticus muscle becomes relatively dominant, making the corners of the mouth look naturally raised. The effect begins to appear 3 to 7 days after injection, reaches its maximum at about 2 weeks, and lasts about 3 to 4 months. The dosage injected into the DAO depends on professional judgment, but is known to be approximately 2 to 4 units on each side.

Hyaluronic acid fillers fill volume. Replenishing volume in marionette lines or around the corners of the mouth lightens sagging shadows and revives the mouth corner line. The duration is about 6 to 12 months depending on the product, area, and individual differences, and some may last longer.

Botox and fillers have different roles. When Botox, which controls muscle strength, and filler, which fills volume, are used together, natural results are often achieved compared to a single procedure alone.

📌 Key Summary: Muscles with Botox, volume with filler. Designing the two together is more natural.

👄 Why you need to look at the lips and philtrum together

Looking at the corners of the mouth alone can easily become a half-baked approach. The conditions that create a youthful impression are actually gathered around the lips. A short philtrum, plump lips, and naturally raised mouth corners — when these three fit together, the impression becomes soft.

Onlif's lip lifting does not look at these three separately. Because filling only the volume is awkward, and capturing only the line is insufficient, the balance of lips, philtrum, and mouth corners is designed as a single design. When volume is created in the upper lip, the philtrum visually looks shorter, and the overall ratio of the face is established. Here, the youthful ratio of philtrum : upper lip : lower lip = 1 : 1 : 1 is the standard.

Onlif uses the 'line tracing' technique to precisely capture the upper lip line (peaks) to make the philtrum look shorter, and mitigates lip asymmetry together with specialized Botox that precisely manages the philtrum muscles. The specialized lip filler used here is selected to reduce foreign body sensation and increase retention, featuring high elasticity and cohesiveness tailored for the lip area where there is a lot of movement.

📌 Key Summary: When mouth corners are designed together with the lips and philtrum, the ratio is completed and the impression becomes soft.

⏱️ How does the procedure proceed?

Lip lifting is completed quicker than you think. The entire process takes approximately 10 to 15 minutes, which is not burdensome.

1. Consultation and Design — Check face ratio and lip shape, and design with a 1:1 customized approach.

2. Anesthetic Cream Application — Apply anesthetic cream to the procedure area and wait sufficiently.

3. Procedure and Correction — Delicately inject fillers and Botox to capture lines, volume, and asymmetry.

4. Finish and Confirmation — Compare before and after the procedure and guide on management methods.

The advantage of the non-surgical approach is that you can return to daily life immediately after the procedure. Swelling or bruising varies depending on individual constitution, but most subside within 2 to 3 days, and are sufficiently covered with makeup the next day. Pain is usually at the level of a prick after applying anesthetic cream, and sensitive people can receive it more comfortably with additional treatments.

📌 Key Summary: 10 to 15 minutes, immediate return to daily life is possible. Swelling and bruising usually subside within 2 to 3 days.

⚠️ Naturalness and safety, what should not be missed?

The thing to be most wary of in mouth corner procedures is overcorrection. If you raise the corners of your mouth too much, it can become an unnatural, so-called 'Joker smile' when smiling. Therefore, it is important to approach step-by-step with small amounts, and to view the movement of the face together, including a flat expressionless face, a smiling expression, and when speaking. A single static photo does not give the answer.

In terms of safety, the rarest but most serious complication of filler procedures is **Vascular Occlusion**. If there are signals such as severe pain, changes in skin color (pale or purple), blisters, or vision abnormalities, immediate action is required. Fortunately, hyaluronic acid fillers can be dissolved with an enzyme called Hyaluronidase, leaving room to reverse overcorrection or emergency situations.

And there are a few things you must disclose before the procedure. If you have a history of oral herpes, it can be reactivated by stimulation, and if you are pregnant, breastfeeding, or in a condition related to blood coagulation, careful judgment is required. What not to do is just as important as what to do, which is the beginning of a safe procedure.

📌 Key Summary: Overcorrection prevention is achieved by dynamic expression evaluation, and safety is maintained by prior notification and emergency preparedness.

🙋 It helps these people

• Those who are often told they look angry when they have an expressionless face

• Those who have thin lips and are concerned about wrinkles around the mouth

• Those whose lip lines or mouth corners are asymmetrical

• Those whose lips look small compared to the length of the philtrum

• Those who want to look naturally younger without changing their shape

The important thing is not 'what to change' but 'what to restore'. Refining sagging mouth corners is close to the process of removing signs of aging that cover the original bright impression.

❓ Frequently Asked Questions

What is the difference between mouth corner Botox and fillers?

Botox alleviates sagging by weakening the strength of the DAO muscle that pulls the mouth corners down, and fillers revive lines by filling volume around the mouth and marionette lines. If the cause is muscle, Botox is advantageous, and if it is volume loss, filler is advantageous, and using both together is often more natural.

How long does the effect of mouth corner Botox last?

The effect appears 3 to 7 days after injection, reaches its maximum at about 2 weeks, and lasts approximately 3 to 4 months. If you undergo the procedure again before the effect is completely gone, the retention tends to continue more stably.

Is it possible to live daily life immediately after the procedure?

Yes, non-surgical procedures allow you to return to daily life immediately after the procedure. Swelling or bruising varies individually, but most subside within 2 to 3 days, and can be covered with makeup the next day.

Can smiling become unnatural like a Joker after Botox or filler?

This can happen in case of overcorrection. Therefore, it is important to approach step-by-step with small amounts, and to evaluate all movements of expressionless, smiling, and speaking. Controlling within a natural range can reduce unnaturalness.

What should I do if vascular occlusion is suspected after a filler procedure?

If there are symptoms such as severe pain, skin color change (pale/purple), blisters, or vision abnormalities, you must immediately inform the place where you received the procedure and receive measures. Hyaluronic acid fillers can be dissolved with hyaluronidase, making it possible to respond to emergency situations.

Can I receive only lip fillers?

Yes, a lip filler procedure alone is also possible. However, since the area around the mouth is an area with large muscle movements, controlling philtrum and mouth corner Botox together can help you expect clearer asymmetry mitigation and youthful impression effects.

Can I receive procedures during pregnancy or breastfeeding?

Pregnancy and breastfeeding are periods that require careful judgment, and whether to perform procedures and when to resume varies depending on individual status. We highly recommend consulting and discussing in advance during the consultation.

Mouth Corner Lifting, Things to check before choosing a clinic

Even for the same procedure, the results and recovery process vary depending on where, by whom, and how it is performed. Asking the following items directly during the consultation will help you make a judgment.

• Is it a place that performs that procedure frequently? — Each clinic has different focus procedures. Check if it is a place that regularly conducts mouth corner lifting.

• Can I check the products and equipment used? — Ask if you can check the product name and whether it is genuine (whether it is an imported approved product, or if there is an unboxing verification procedure) during the consultation.

• Do they explain the composition of the cost? — Rather than just hearing the total amount, you must listen to the explanation of what product is used, how much, and to what extent to make a judgment.

• Do they design by looking at the entire face? — Even for the same procedure, the placement and amount vary depending on the face shape, skin condition, and left-right asymmetry.

• Do they explain adverse reactions and the recovery process first? — It is better to judge at a place that informs you of possible adverse reactions and coping methods together, rather than a consultation that only talks about expected changes.

• Is there a way to check after the procedure? — Check if the timing of checking the progress, how to contact in case of abnormalities, and the standards for re-visiting are established.

This is how Onlif Clinic performs mouth corner lifting

• We divide responsibilities — With the idea that one doctor does not handle all procedures, Onlif divides medical treatment with responsible doctors by field.

• We check products and equipment together during the consultation — We guide you through the products used and the unboxing verification process during the consultation process.

• Costs are guided along with the composition after diagnosis — Since the area, capacity, and range vary from person to person, we explain what costs how much together.

• We design by looking at the overall face balance — We view the face in three axes: texture, balance, and youth signals, and plan in a direction to clean up parts that hide the natural impression rather than changing the shape.

• We speak of adverse reactions and the recovery process first — Along with expected changes, we guide individual differences, possible adverse reactions, and countermeasures before the procedure.

• We look at progress after the procedure together — If verification is needed during the recovery period, we guide you on re-visits and contact channels.

If you are considering mouth corner lifting, it is better to first check what is possible and what is difficult in your current status. Accurate diagnosis and treatment plans can only be judged through face-to-face medical treatment. Check through a consultation at Gangnam Onlif Clinic.