Quick answer: PDO threads vs PLLA threads differ mainly in material and how long they stay in the skin. PDO (polydioxanone) dissolves in about six months and gives a firm, immediate lift. PLLA (poly-L-lactic acid) dissolves more slowly, often over about a year or more, and keeps building collagen. PDO suits a strong lift; PLLA suits longer collagen support.
Key takeaways
- Both materials are absorbable and have long been used in medicine.
- PDO dissolves faster; PLLA stays longer in the tissue.
- PDO threads often give a stronger immediate grip.
- PLLA is well known for stimulating collagen over many months.
- Results usually last longer than the thread itself, thanks to collagen.
What are PDO threads?
PDO stands for polydioxanone. It has been used for decades in surgical stitches because the body breaks it down safely. In thread lifts, PDO comes in many forms: smooth mono threads for skin quality, twisted threads for volume, and barbed or moulded threads for lifting. MINT Lift is a well-known Korean PDO lifting thread. PDO is usually absorbed over about six months, and collagen forms around the thread as it dissolves.
What are PLLA threads?
PLLA stands for poly-L-lactic acid. It is the same type of material used in collagen stimulators such as Sculptra. PLLA threads, sometimes combined with PLGA, dissolve more slowly than PDO, often over about a year or more. Silhouette Soft is a well-known thread that uses PLLA with small cones. As PLLA breaks down, it keeps encouraging collagen, so the skin can look firmer for longer.
How do PDO and PLLA threads compare?
- Material: PDO polydioxanone; PLLA poly-L-lactic acid.
- Absorption time: PDO about six months; PLLA often about a year or more.
- Immediate lift: PDO barbed threads usually grip more firmly.
- Collagen effect: both stimulate collagen; PLLA is known for a longer effect.
- Feel: PDO can feel firmer at first; PLLA threads are often softer.
- Typical longevity of results: both often about one to two years, depending on the person.
Which is better for a strong lift?
If you have heavier sagging along the jowls or cheeks and want a clear change right away, barbed PDO threads are often the better choice. They hold tissue firmly and can redraw the jawline line. Many doctors use more threads on the side that sags more for better balance.
Which is better for longer collagen support?
If your sagging is mild to moderate and you care about skin firmness over time, PLLA threads are a good option. They lift more gently but keep stimulating collagen for longer, which can improve skin thickness and texture as well as shape.
Does longer absorption mean longer results?
Not exactly. The lift you see comes partly from the thread and partly from the collagen formed around it. Even after a thread dissolves, the collagen can help support the tissue for months. Your age, skin thickness, sagging level, number of threads and lifestyle all affect how long results last.
Can PDO and PLLA be combined?
Yes. Some doctors use barbed PDO threads for lifting and PLLA threads for collagen support in the same face, or combine threads with Ultherapy, Thermage or fillers. The plan depends on your face shape and goals.
What is the recovery like?
Recovery is similar for both. Expect swelling, small bruises, mild pain and a tight feeling for several days. Small dimples can appear and usually settle within one to two weeks. Avoid wide mouth opening, facial massage, saunas and hard exercise for a short time after treatment.
Is it safe?
Both materials are absorbable and widely used. Risks include bruising, asymmetry, visible or palpable threads, and rarely infection or thread exposure. Ask which brand and how many threads will be used, and choose an experienced doctor.
How to choose
Korea treated about 2.01 million foreign patients in 2025, and around 63% came for dermatology, according to the Ministry of Health and Welfare. Thread lifts are a common choice for visitors who want lifting without surgery. The best thread depends on how much lift you need, how natural you want it to feel and how long you want collagen support.
Frequently asked questions
Which thread lasts longer?
PLLA usually stays longer in the tissue, but results from both often last one to two years.
Are PDO threads safe?
Yes. PDO has been used in surgical stitches for many years and dissolves naturally.
Do PLLA threads look more natural?
They often feel softer, but the result depends mainly on technique.
Can I repeat a thread lift?
Yes. Many people repeat it every one to two years.
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).
- HansBiomed – MINT Lift product information; Sinclair – Silhouette Soft product 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.
