Botox for the Corners of the Mouth—Frequently Asked Questions

Botox for the corners of the mouth is a procedure in which botulinum toxin is injected into the muscles that pull the corners of the mouth downward, addressing the appearance of drooping corners of the mouth.

This treatment is used to address concerns such as a serious expression that makes the corners of the mouth appear droopy, a "V-shaped" mouth, looking grumpy, or asymmetry between the left and right corners of the mouth. It may also be considered for those concerned about marionette lines or sagging around the mouth.

At YAYOI CLINIC, we incorporate the anatomy-based “Imaizumi Method®” approach to determine injection sites after assessing asymmetry in the corners of the mouth, muscle movement, and the balance of facial expressions—both neutral and smiling. Rather than simply lifting the corners of the mouth, we prioritize maintaining a natural appearance.

Depending on the injection site and the amount of medication used, you may experience some discomfort or an unnatural feeling when moving your mouth or making facial expressions. Since the appropriate dosage for Botox injections at the corners of the mouth varies depending on how much you want to adjust them, it is important to confirm the desired result before undergoing the procedure.

While Botox injections can be painful, YAYOI CLINIC has adopted the “pain-free Botox” approach developed by BIANCA CLINIC to minimize discomfort during the procedure. The level of pain experienced varies from person to person.

On the day of the procedure, please be careful not to rub or massage the injection site vigorously. Also, please refrain from drinking alcohol, strenuous exercise, and using saunas. You may experience temporary discomfort, such as when using a straw.

The duration of Botox's effects varies from person to person. While it generally lasts about 3 to 4 months, this can vary depending on muscle movement and the amount injected; therefore, the timing of a follow-up injection should be determined in consultation with your doctor after assessing how the effects have progressed.

With Botox injections around the corners of the mouth, pain, swelling, redness, and bruising may occur at the injection site. Additionally, because the treatment affects muscle function, temporary changes in facial expressions or partial muscle weakness may occur.

Yes. If you're concerned about asymmetry in the corners of your mouth, we'll assess muscle movement and the overall balance of your face before adjusting the injection volume and placement. Depending on the cause of the asymmetry, treatments other than Botox injections may be more appropriate.

If you’re concerned not only about drooping corners of the mouth but also about the fullness of your mouth area or your jawline, we may recommend a combination of treatments such as Botox for the philtrum, hyaluronic acid injections for the corners of the mouth, thread lifts, or shopping lifts. At YAYOI CLINIC, we don’t focus solely on the corners of the mouth; instead, we propose treatments that take into account the overall balance of your face.