First published: 2020-07-15 / Last reviewed: 2026-05-28
This is a guide to Botox compiled by Dr. Choi Byeong-geun of SHINE U Clinic Konkuk (3 minutes' walk from Konkuk Univ. Station, Exit 1).
As interest in a smaller face line grows, there are many inquiries about jaw Botox. However, even if the concern is the same, the approach differs depending on whether the cause is the masseter muscle or the salivary glands. In this article, we have summarized the difference between jaw Botox and salivary gland Botox.
Basic Principle of Botox
Botox is an injection that utilizes toxins produced by botulinum bacteria.
When injected into a muscle, it blocks the transmission of neurotransmitters, reducing movement for a certain period, thereby creating changes such as wrinkle reduction or muscle atrophy.
- It refines the line through muscle atrophy.
- Many people feel changes around 1 month after the procedure.
- The duration usually lasts 4 to 6 months, and there may be individual differences.
Causes Addressed by Jaw Botox
A square jaw is often caused by the development of the masseter muscle.
- It works to atrophy the masseter muscle, refining the line.
- It is used for those concerned about a square jaw or double chin.
- It is considered for those who desire a slim V-line.
Another Cause: Salivary Gland Hypertrophy
If your jaw still looks prominent even after jaw Botox, we examine the salivary glands.
- Salivary glands exist in three places: behind the ear, under the jaw, and under the tongue.
- Frequent stimulation or excessive use of the jaw can cause the salivary glands to enlarge.
- When the salivary glands enlarge, the jawline may appear swollen or like a double chin.
If you are curious about the cause of your jaw concerns, please check with Jawline Consultation.
How Salivary Gland Botox Works
Salivary gland Botox acts on different points.
- It contracts the muscles connected to the salivary glands, refining the line.
- It helps in the cosmetic improvement of salivary gland hypertrophy.
- It has been recognized for its safety and efficacy with KFDA approval.
It is also reported to have the advantage of quick return to daily life due to less bruising, swelling, and pain.
Comparison of the Two Approaches
The choice depends on the cause.
| Category | Jaw Botox | Salivary Gland Botox |
|---|---|---|
| Target | Masseter muscle | Muscles around the salivary glands |
| Main concern | Square jaw | Swollen submandibular area |
Precautions After the Procedure
It is recommended to follow these precautions after the procedure.
- Avoid alcohol and smoking for 1-2 days.
- Avoid jjimjilbangs and saunas for about a week.
- Check for genuine products, proper dosage, and hygienic environment.
Even for the same jaw concern, the method differs depending on the cause, so it is good to examine your condition first. If you are curious about the approach that is right for you, please feel free to inquire with Ask About My Jaw Botox.
Authored by: Dr. Choi Byeong-geun (Chief Director of SHINE U Clinic Konkuk / Member of the Korean Academy of Laser Dermatology and Hair, Korean Academy of Aesthetic Plastic Surgery and Laser Medicine, Korean Filler Society, etc.) Last reviewed: 2026-05-28
This article provides general information about procedures and does not replace diagnosis or treatment. The suitability and results of the procedure may vary depending on the individual.