Corner of the Mouth Botox Effects: Does It Really Change Your Impression? From Principles to Limitations

Mouth corner Botox is a procedure that weakens the strength of the muscles that pull down (depressor anguli oris, DAO) to make the mouth corners look relatively lifted, instead of lifting the muscles that raise the saggy mouth corners. Rather than cutting the muscle or touching the bone, it is a method that temporarily rests the contraction of specific muscles with botulinum toxin. Therefore, the treatment time is as short as 5 to 10 minutes, and there is almost no recovery period.

The effect usually appears gradually from 3 to 7 days after the procedure, and the maximum effect is confirmed after 1 to 2 weeks. The average maintenance period is 3 to 4 months. It is particularly well-suited for softening an impression that looks angry or sullen when expressionless. However, if the cause of the drooping mouth corners is not the muscles but skin sagging or volume loss, Botox alone has its limitations. Therefore, it is important to pinpoint the cause first.

🔍 Mouth corner Botox, what exactly is the principle?

At the corners of our mouths, there are muscles that move opposite to each other. **These are the levator anguli oris, which raises the corners of the mouth, and the depressor anguli oris (DAO), which pulls the corners of the mouth down.**

As we age or expression habits harden, the DAO becomes overly active and continues to pull the corners of the mouth down. As a result, they look droopy even when still, and the expressionless face feels cold.

At this time, if botulinum toxin is precisely injected into the DAO, acetylcholine secretion is inhibited at the neuromuscular junction, and muscle contraction temporarily stops. Since the downward pulling force is weakened, the lifting muscles have a relative advantage, and the corners of the mouth naturally look lifted.

The key is location and depth. Around the mouth, the orbicularis oris, which is involved in pronunciation, eating, and expression, is closely intertwined, so even a little inaccuracy can affect the wrong muscles. This is why you need hands that are familiar with facial anatomy.

📌 Key Summary: Mouth corner Botox is a procedure that relatively lifts the corners of the mouth by weakening the strength of the muscles pulling down (DAO), and precise location injection determines the result.

⏱️ When does the effect appear and how long does it last?

This is the part most people are curious about. I've organized it into a table first.

It is correct to judge the effect at least 1 to 2 weeks later. There is no need to be impatient right after the procedure, saying 'it hasn't changed much.' If you feel it's insufficient, a touch-up with a small additional amount is possible at the 1 to 2 week check-up point.

One comforting point is that the effect of Botox is reversible. Over time, muscle function naturally returns, and even if you don't like it, it won't get worse than before the procedure. For those trying it for the first time, this point of 'returning' actually reduces the burden.

Interestingly, it is clinically reported that if you repeat the treatment, the habit of using the muscles itself decreases, and the maintenance period tends to increase gradually. Of course, there are individual differences.

📌 Key Summary: The effect starts from 3 to 7 days, reaches its maximum in 1 to 2 weeks, and lasts an average of 3 to 4 months. Since it is reversible, it recovers naturally even if you do not like it.

🚫 Are there cases where mouth corner Botox is not effective?

Yes, definitely. Knowing this honestly is the way to reduce disappointment.

There is more than one reason why the corners of the mouth droop. If muscle overactivity is the cause, Botox works well, but in the cases below, the sole effect is limited.

• Loss of skin elasticity / tissue sagging: The area of lifting treatments such as thread lifting or ultrasound HIFU / radiofrequency RF

• Volume loss / marionette lines (deep wrinkles below the mouth corners): Improvement is needed by filling the sunken areas with marionette filler

• The shape itself in a static state (expressionless): It is more advantageous to shape the lines with mouth corner filler

• Skeletal asymmetry / dental occlusion issues: Hard to fundamentally resolve with muscle adjustment alone

Mouth corner filler fixes the shape when expressionless, and Botox improves the impression when moving. Since the principles are different, combining the two creates synergy. If the cause is saggy tissue, lifting-type treatments will be considered together. In the end, the first step is a diagnosis to determine 'what caused the sagging.'

📌 Key Summary: If the cause of the drooping mouth corners is skin sagging, volume loss, or skeletal structure, Botox alone has its limitations, and a combination with filler or lifting is needed.

💋 Why is it better when combined with a lip lift?

Let's take a step further here. In fact, there are many cases where the impression does not change much just by looking at one corner of the mouth.

The conditions for a youthful impression are concentrated around the lips. A short-looking philtrum, plump lips, and naturally lifted mouth corners. When these three are combined, the center of the face is organized, and a youthful impression is completed. Conversely, a stretched philtrum, thin lips, and drooping mouth corners are read as representative signs of aging.

Therefore, Onlif Clinic approaches mouth corner Botox from a 'lip lift' perspective, designing lip filler + philtrum Botox together rather than viewing it alone.

• Lip Filler: Giving volume and line to the upper lip makes the philtrum visually shorter and balances the facial proportions.

• Philtrum Botox: Precisely adjusts the philtrum muscles to organize the lip line and asymmetry.

• Mouth Corner Botox: Releases the downward pulling force to create a soft impression even when expressionless.

The ideal ratio is often talked about as philtrum : upper lip : lower lip = 1 : 1 : 1. Filling only the volume looks awkward, and shaping only the line is insufficient. Therefore, the key is to design the balance of the lips, philtrum, and mouth corners at the same time. The treatment time is about 10 to 15 minutes, including consultation and design, and is proceeded with after sufficient application of anesthetic cream.

Onlif aims for a non-surgical approach that naturally removes the sagging and lack of volume that hid the natural impression, rather than a direction of reconstructing the shape of the eyes, nose, and mouth. The philosophy, "Because you are precious, we do not change you," lies here.

📌 Key Summary: Instead of looking only at the mouth corners, a lip lift (lip filler + philtrum Botox) that designs the balance of the philtrum, lips, and mouth corners together is more effective for a youthful impression.

⚠️ Side effects and precautions, know them in advance

Just because it's non-invasive doesn't mean there's nothing to worry about.

If the location is inaccurate or the dose is excessive, functional inconveniences such as asymmetry when smiling, awkward pronunciation, spilling drinks, or one mouth corner rising excessively can occur. Most naturally recover as the effect wears off, but it is best not to create such situations in the first place.

These are things to take care of before and after the treatment.

• Before Treatment: Ingredients that inhibit blood coagulation, such as aspirin, anticoagulants, omega-3, and vitamin E, can increase the risk of bruising, so consult in advance.

• After Treatment: Do not lie down for 4 to 6 hours, do not massage or press the treated area, and avoid drinking, sauna, and strenuous exercise on the day.

• During Pregnancy/Breastfeeding: Due to insufficient evidence of safety, treatment is contraindicated.

We also need to touch upon the product story. For botulinum toxin, the potency (Unit) conversion ratio varies from product to product, such as onabotulinum, abobotulinum, and incobotulinum, so the units cannot be simply compared. This means that comparing numbers like 'how many units at Clinic A, how many units at Clinic B' can be meaningless. Therefore, dosage design that reflects genuineness and product characteristics is important.

Finally, tolerance. Although it is rare for neutralizing antibodies (tolerance) to form in small-dose treatments for cosmetic purposes, the risk increases if repeated excessively frequently or with high doses. Keeping appropriate intervals is safe.

Onlif operates in a way where each specialist is in charge of the treatment they are best at. Hands familiar with facial anatomy and genuine products, these two are the foundation of safety.

📌 Key Summary: If the location or dose is inaccurate, expression discomfort may occur, units cannot be compared by product, and it is contraindicated during pregnancy and breastfeeding.

💰 How much is the cost?

The cost of mouth corner Botox is formed at approximately 30,000 to 160,000 KRW (excluding VAT), depending on the clinic and the product used. The wide range is because product lines, dosages, and treatment areas differ.

However, as mentioned earlier, rather than judging by price alone, it is wise to consider whether it is a genuine product, the skill of the practitioner, and a design tailored to the cause of my sagging. In cases where filler and Botox are configured together like a lip lift, the cost for each item changes, so it is more accurate to check during the consultation.

📌 Key Summary: Mouth corner Botox is around 30,000 to 160,000 KRW, and it is better to consider authenticity, proficiency, and cause-tailored design rather than price.

❓ Frequently Asked Questions (FAQ)

When does the effect of mouth corner Botox appear and how long does it last?

Usually, the effect starts from 3 to 7 days after the procedure and reaches its peak in 1 to 2 weeks. The average maintenance period is 3 to 4 months, and can vary from 2 to 6 months depending on the individual.

Which is right for me, mouth corner Botox or mouth corner filler?

Botox improves the movement when making expressions, and filler shapes and gives volume when expressionless. If the cause is muscle overactivity, Botox is advantageous, and if it is volume loss, filler is advantageous, and they create synergy when combined. An accurate judgment requires confirming the cause in a consultation.

Can my expression become awkward when smiling after the treatment?

If the location is inaccurate or the dose is excessive, asymmetry when smiling or pronunciation discomfort may occur. Most naturally recover as the effect wears off, but to reduce this risk, it is important to receive it precisely at a place familiar with facial anatomy.

How can I know if my mouth corner sagging is due to muscles or skin?

Compare your expressionless face and smile, and if there is a big improvement when moving, there is a high possibility that it is a muscle cause. Skin/tissue sagging, volume loss, and skeletal factors have limitations with Botox alone, so fillers or liftings are considered together. Identifying the cause is accurate through diagnosis via consultation.

Can I get only lip filler, or is it better to get it together as a lip lift?

Lip filler sole treatment is also possible. However, since the mouth area is a part with large muscle movements, approaching it as a lip lift that configures philtrum and mouth corner Botox together balances the philtrum, lips, and mouth corners, so you can expect a more natural youthful impression.

Does tolerance develop if I receive it repeatedly?

Neutralizing antibody (tolerance) formation is rare in small-dose treatments for cosmetic purposes. However, the risk can rise if repeated excessively frequently or with high doses, so it is good to keep appropriate intervals.

I am pregnant or breastfeeding, can I receive the treatment?

During pregnancy and breastfeeding, botulinum toxin treatment is not recommended due to insufficient evidence of safety. This is an item you must inform before the consultation.

Mouth corner Botox, things to check before choosing a clinic

Even for the same treatment, the results and recovery process differ depending on where, who, and how it is done.

Asking the items below directly during the consultation will help you make a decision.

• Is it a place that performs that treatment frequently — Each clinic has different main treatments they handle. Check if it is a place that regularly performs mouth corner Botox.

• Can you check the products and equipment used — Ask if you can check the product name and authenticity (whether it is an import-authorized product, whether there is an opening confirmation procedure) during the consultation.

• Do they explain the breakdown of the cost — Rather than just hearing the total amount, you need to hear the explanation of what product is used, how much, and in what area to make a judgment.

• Do they design looking at the whole face — Even for the same treatment, the location and amount placed differ depending on the face shape, skin condition, and left-right asymmetry.

• Do they explain adverse reactions and recovery processes first — Rather than a consultation that only talks about expected changes, a place that informs you of possible adverse reactions and coping methods together is good for making a judgment.

• Is there a check-up route after the treatment — Check if the time to check the progress, how to contact when there is an issue, and revisit criteria are set.

Onlif Clinic does mouth corner Botox like this

• We divide responsibilities — With the thought that one doctor cannot handle all treatments, Onlif divides medical treatment by assigning doctors for each field.

• We check products and equipment together during the consultation — We guide you through the products used and the opening confirmation procedure during the consultation process.

• Costs are guided along with the configuration after diagnosis — Since the part, volume, and scope differ for each person, we explain together what costs how much.

• We design looking at the overall facial balance — We look at the face with three axes: texture, balance, and signs of youth, and make a plan in a direction to organize the parts hiding the natural impression rather than changing the shape.

• We tell you about adverse reactions and recovery processes first — Along with changes that can be expected, we guide individual differences, possible adverse reactions, and coping methods before the treatment.

• We look at the progress after the treatment together — If checking is needed during the recovery period, we guide you through revisit and contact routes.

If you are contemplating mouth corner Botox, it is better to check first what is possible and what is difficult in your current state.

An accurate diagnosis and treatment plan can only be judged through face-to-face medical treatment. Check through a consultation at Gangnam Onlif Clinic.