Quick answer: For jawline contouring, a thread lift lifts sagging jowls to redraw a clear jawline, while jaw Botox relaxes a large masseter muscle to slim a wide, square lower face. Choose threads if your jawline looks soft because of sagging, and Botox if it looks wide because of muscle. Many people combine both for a slim, sharp V-line.
Key takeaways
- Threads treat sagging; Botox treats muscle bulk.
- Jaw Botox works on the masseter, the main chewing muscle.
- Threads give an instant lift; Botox slims gradually over about 4 to 8 weeks.
- Botox has almost no downtime; threads need one to two weeks of recovery.
- Combining both is popular in Korea for a V-line shape.
Why does the jawline look wide or undefined?
A jawline can lose definition for different reasons. In younger people, a strong masseter muscle from clenching or chewing often makes the lower face look square. With age, sagging tissue and jowls blur the line between the jaw and the neck. Some people also have extra fat under the chin. The right treatment depends on which of these shapes your jaw.
What is a thread lift for the jawline?
A thread lift uses dissolvable PDO or PLLA threads placed under the skin after numbing. The threads hold sagging tissue along the jowls and lift it upward, so the jawline looks cleaner right away. As they dissolve, collagen forms around them. Results often last about one to two years, depending on the thread type and your skin.
What is jaw Botox?
Jaw Botox, also called masseter Botox, uses botulinum toxin injected into the masseter muscle at the angle of the jaw. It relaxes the muscle so it slowly becomes smaller, which slims the lower face from the front. It can also help with teeth clenching. The slimming effect appears over about 4 to 8 weeks and usually lasts about 4 to 6 months.
How do thread lifts and jaw Botox compare?
- Main target: threads lift sagging tissue; Botox reduces muscle bulk.
- Best for: threads for jowls and a soft jawline; Botox for a square or wide jaw.
- When results appear: threads right away; Botox over 4 to 8 weeks.
- Downtime: threads one to two weeks of swelling or tightness; Botox almost none.
- How long it lasts: threads often one to two years; Botox about 4 to 6 months.
When is a thread lift better?
A thread lift is often better if you are in your late 30s or older and notice jowls, a drooping lower face or a jawline that blurs into the neck. Botox will not lift sagging tissue, so threads or other lifting treatments give a clearer result here.
When is jaw Botox better?
Jaw Botox is often better if your face looks wide or square from the front, you clench or grind your teeth, or you feel firm muscle at the angle of the jaw when you bite. It is a popular treatment for people in their 20s and 30s who want a slimmer face shape without needles beyond a few small injections.
Can you combine thread lift and Botox?
Yes. Combining both is common in Korea. Botox slims the muscle at the back of the jaw, and threads lift the tissue along the front of the jawline. Together they can create a slimmer, more defined V-line. Some people also add chin filler for projection or fat reduction for the area under the chin.
What is the downtime?
After jaw Botox, you may have tiny marks at the injection points for a few hours. Chewing may feel slightly weaker for a few weeks. After a thread lift, expect swelling, small bruises and a tight feeling for one to two weeks. Avoid wide mouth opening and hard chewing for a short time.
Is it safe?
Both are safe when performed by trained doctors. Botox risks are usually mild, such as small bruises or temporary changes in smile if placed incorrectly. Thread risks include bruising, asymmetry and visible threads. Using genuine products and an experienced doctor lowers these risks.
How to decide
Korea treated about 2.01 million foreign patients in 2025, and around 63% came for dermatology, according to the Ministry of Health and Welfare. V-line and jawline treatments are among the most popular requests. The key question is whether your jaw looks wide because of muscle or soft because of sagging. A quick exam answers this.
Frequently asked questions
Can Botox lift jowls?
No. Jaw Botox slims muscle but does not lift sagging tissue.
How often do I need jaw Botox?
Usually every 4 to 6 months at first; some people need it less often over time.
Can I have both on the same day?
Often yes, depending on the plan. Your doctor will advise on timing.
Which gives faster results?
Threads show a lift right away; Botox slimming appears over several weeks.
Sources
- Ministry of Health and Welfare, Republic of Korea – 2025 foreign patient statistics (press release, 2026).
- Ministry of Food and Drug Safety, Republic of Korea – botulinum toxin and absorbable thread approval information.
- American Academy of Dermatology – botulinum toxin information.
This article is for general information only and is not medical advice. Results vary between individuals. Please consult a qualified physician before any treatment.
