Quick answer: Ultherapy lifts gradually with focused ultrasound, with no needles and little downtime, and results build over two to three months. A thread lift uses dissolvable threads placed under the skin to lift tissue right away, but it has more swelling and bruising. Ultherapy suits mild to moderate sagging; threads suit more visible sagging.
Key takeaways
- Ultherapy is non-invasive; a thread lift is minimally invasive.
- Ultherapy results build slowly; a thread lift gives an instant lift.
- Threads usually need one to two weeks of careful recovery.
- Ultherapy suits mild to moderate sagging and maintenance.
- Many people combine both for a stronger, longer-lasting lift.
What is Ultherapy?
Ultherapy is a micro-focused ultrasound treatment by Merz Aesthetics. The doctor uses a live ultrasound image to place small points of heat at 1.5 mm, 3.0 mm and 4.5 mm, reaching the SMAS layer that holds up the face. There are no cuts or needles. Collagen builds over two to three months, so the lift appears gradually and usually lasts about a year.
What is a thread lift?
A thread lift uses thin medical threads that slowly dissolve in the body. The doctor numbs the skin and places the threads under the skin through small needle points. Many threads have tiny barbs or cones that hold the tissue and lift it into a higher position. You can see the lift straight away, and as the threads dissolve, they also encourage new collagen. In Korea, common options include PDO threads such as Mint Lift and PLLA threads such as Silhouette Soft.
How do Ultherapy and a thread lift compare?
- Method: Ultherapy uses ultrasound energy; a thread lift uses dissolvable threads under the skin.
- Needles: Ultherapy none; thread lift small needle entry points with local anaesthetic.
- When you see results: Ultherapy over two to three months; thread lift right away.
- Strength of lift: Ultherapy mild to moderate; thread lift moderate to strong.
- Downtime: Ultherapy a few days of mild tenderness; thread lift one to two weeks of swelling, tightness or bruising.
- How long it lasts: Ultherapy about a year; thread lift about one to two years, depending on the thread type.
Which is better for mild sagging?
For early jowls, a slightly soft jawline or loose skin under the chin, Ultherapy is usually the better first step. It tightens the deep support layer without needles, and most people return to normal activities the same day. It is also a good way to maintain results after a thread lift.
Which is better for more visible sagging?
If the cheeks and jowls have dropped clearly, or you want a visible change quickly, a thread lift is often the better option. The threads physically reposition the tissue, so the lift is stronger and immediate. It is a popular choice for people who want a noticeable lift but are not ready for surgery.
Can you combine Ultherapy and a thread lift?
Yes. This is a common plan in Korea. The thread lift gives the immediate lift, and Ultherapy tightens the SMAS and builds collagen to support the result. Doctors may do Ultherapy first and threads later, or the other way round, usually a few weeks apart. Your doctor will plan the order after checking your face.
What is the recovery like?
After Ultherapy, you may have mild redness, swelling or tenderness along the jaw for a few days. After a thread lift, swelling, small bruises, a tight feeling and small dimples can last one to two weeks. You should avoid wide mouth opening, facial massage, saunas and hard exercise for a short time. If you plan threads, allow at least a few days in Seoul before flying home.
Is it safe?
Both are safe in experienced hands. Ultherapy risks are rare and include small burns or temporary numbness. Thread lift risks include bruising, uneven skin, visible or felt threads and, rarely, infection. Choosing an experienced doctor and genuine, approved threads lowers these risks.
How to choose between them
Korea treated about 2.01 million foreign patients in 2025, and around 63% came for dermatology, according to the Ministry of Health and Welfare. Lifting is one of the main reasons visitors come. Your choice depends on how much sagging you have, how fast you want results and how much downtime fits your trip. A face assessment helps your doctor match the right lift to your face.
Frequently asked questions
Does a thread lift hurt?
The area is numbed, so most people feel pressure and mild discomfort. Some soreness can last a few days.
Which lasts longer?
Thread lifts often last one to two years, while Ultherapy usually lasts about a year.
Can I fly home after a thread lift?
Usually yes, after a few days. Swelling can feel uncomfortable on long flights, so plan some rest time.
Is Ultherapy a good alternative to threads?
For mild sagging, yes. For more visible sagging, threads or a combination usually work better.
Sources
- Ministry of Health and Welfare, Republic of Korea – 2025 foreign patient statistics (press release, 2026).
- U.S. Food and Drug Administration – 510(k) premarket notification database (Ulthera System).
- Ministry of Food and Drug Safety, Republic of Korea – medical device approval information (absorbable lifting threads).
This article is for general information only and is not medical advice. Results vary between individuals. Please consult a qualified physician before any treatment.
