Quick answer: For facial sagging, a thread lift physically lifts dropped tissue back up using dissolvable threads, while dermal filler restores lost volume that makes the face look saggy. Choose a thread lift when tissue has moved down, and filler when the face looks hollow or flat. Many people need a little of both for a natural result.
Key takeaways
- Sagging can come from tissue moving down, volume loss, or both.
- Threads reposition tissue; filler replaces volume.
- Filler results are seen instantly with little downtime.
- Threads give an instant lift but need one to two weeks of recovery.
- Too much filler to lift sagging can make the face look heavy.
Why does the face sag?
As we age, the face changes in layers. Bone slowly loses volume, fat pads shrink and move down, and the skin and SMAS layer lose collagen and elasticity. The cheeks may look flatter, the folds by the mouth deeper and the jawline less clear. Some faces mainly lose volume, while others mainly drop. Knowing which one is happening helps choose the right treatment.
What is a thread lift?
A thread lift uses dissolvable medical threads, such as PDO or PLLA, placed under the skin through small entry points after numbing. Barbs or cones on the threads hold the tissue and lift it into a higher position. You see the lift right away, and as the threads dissolve, collagen forms around them. Common options in Korea include MINT Lift and Silhouette Soft.
What is dermal filler?
Dermal filler is a gel injected under the skin to add volume. Most fillers are made of hyaluronic acid (HA), a substance found naturally in the skin, and can be dissolved if needed. Filler can restore volume in the cheeks, temples and under-eye area, and soften deep folds. Results are immediate and usually last about 6 to 18 months, depending on the product and area.
How do thread lifts and fillers compare?
- Main action: threads lift tissue; filler adds volume.
- Best for: threads for drooping jowls and cheeks; filler for hollow or flat areas.
- Results: both visible right away.
- Downtime: threads one to two weeks of swelling or tightness; filler usually a few days of mild swelling.
- How long it lasts: threads often one to two years; HA filler about 6 to 18 months.
- Reversibility: HA filler can be dissolved; threads dissolve on their own over time.
When is a thread lift the better choice?
A thread lift is often better when the cheeks and jowls have clearly dropped, the jawline has lost its line and the face still has good volume. Lifting the tissue back up gives a younger shape without adding size. Threads also suit people who want a lift but worry about the face looking fuller.
When is filler the better choice?
Filler is often better when the face looks tired because of volume loss: flat cheeks, hollow temples, deep under-eye grooves or thin lips. Restoring volume in the right places can lift the look of the lower face indirectly. Filler is also quick, with little downtime, which suits short trips.
Why not just use more filler?
Using large amounts of filler to lift sagging tissue can make the face look heavy, wide or unnatural. Filler adds weight, and too much in the mid-face can push tissue down over time. A balanced plan uses filler for volume and lifting treatments for drooping tissue.
Can you combine both?
Yes. Many natural-looking results come from combining a thread lift with small amounts of filler. Threads lift the jowls and cheeks, while filler restores volume in the temples or mid-face. Doctors may also add Ultherapy or Thermage to tighten the skin. The order and timing depend on your face.
Is it safe?
Both are safe in trained hands. Thread risks include bruising, asymmetry, visible threads and rarely infection. Filler risks include bruising, lumps and, rarely, blocked blood vessels, which is why the injector's knowledge of anatomy is important. Choose a doctor who performs both treatments regularly.
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. Many visitors ask whether they need threads or filler. The answer depends on whether your face has dropped, lost volume or both. A careful face assessment shows which treatment will make the biggest difference.
Frequently asked questions
Can filler lift sagging skin?
It can lift the look of some areas by restoring support, but it cannot pull dropped tissue up like threads.
Which lasts longer?
Thread lifts often last one to two years; HA fillers usually last 6 to 18 months.
Can I have both on the same day?
Sometimes, depending on the areas. Your doctor will plan the timing.
Which has less downtime?
Filler usually has less downtime than a thread lift.
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 – medical device approval information (absorbable lifting threads; hyaluronic acid fillers).
- American Society of Plastic Surgeons – dermal fillers 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.
