For patients who want to understand this properly: what absorbable PDO barbed threads are, how mechanical support differs from a collagen response, what “lift” honestly means, why the result depends so heavily on anatomy and technique, the real risks with figures, why longevity varies, and when surgery, another treatment or nothing is the better answer. It is long on purpose, and it replaces nothing said in a face-to-face assessment. Where I give a personal view, I say so and keep it separate from the evidence.
01What absorbable PDO barbed threads are
A dissolvable suture with barbs — not an implant, not surgery.
A barbed thread is a fine surgical suture made of polydioxanone (PDO), an absorbable polymer long used in surgery. Tiny barbs cut or moulded along its length let it grip soft tissue, so that when the thread is passed along a planned path it can gather and support tissue that is genuinely mobile. It is placed under the skin with a needle or fine cannula, under local anaesthetic, as a sterile procedure.
Two things follow from “absorbable”. First, nothing permanent is left behind — the body breaks the thread down over months. Second, the mechanical support fades as the material weakens, which is why no fixed duration can honestly be promised. It is not a permanent implant, and it is emphatically not a surgical facelift.
02How it works — three separate things
Keep the mechanical, the material and the biological apart.
These three are not equally well evidenced, and blurring them is how threads get oversold.
1 · Immediate mechanical effect. The barbs engage subcutaneous tissue and hold mobile tissue along the chosen vector. This is the real, direct action — and it depends on anatomy, plane, anchorage, vector, tissue quality and technique, not on the thread alone.
2 · Material degradation. PDO is broken down by hydrolysis — water gradually cleaving its chemical bonds. Crucially, its mechanical holding power declines before the material has fully disappeared, and the exact timing varies by product, thread geometry and tissue.[10] There is no single universal clock.
3 · Biological response. Placing a thread provokes a wound-healing and foreign-body response, with some collagen or fibrous tissue forming around it. This is demonstrated mainly in animal and material studies; human evidence is limited.[9] It should not be presented as proof of a durable lift, and I do not claim barbed threads “rejuvenate”, tighten skin, improve circulation or reduce fat.
03What “lift” honestly means
Repositioning mobile tissue — not lifting the whole face.
“Lift” is a generous word for what a thread does. It repositions and supports tissue that is already mobile when you gently lift it — a modest redistribution along one direction. It does not raise fixed tissue, it does not remove skin, and it does not do what a surgeon does by releasing and re-draping the deeper layers. If the change you want needs more than gentle repositioning of mobile tissue, a thread will disappoint you, and saying so early is part of the job.
04Barbs, vectors and anchoring
Three ideas, in plain language.
- Barbs are the small projections along the thread that grip tissue, so a smooth suture becomes something that can hold. More barbs are not automatically more lift — a randomised study found no advantage from more threads.[3]
- Vector is the direction along which mobile tissue is supported. A good vector improves position without bunching, over-correction or an unnatural line in movement; the realistic vector is decided at assessment, and sometimes no vector gives a worthwhile, natural change.
- Anchoring is where the thread gains its hold. Support depends on engaging tissue that can actually bear it; in thin, very lax or previously operated tissue, hold is poorer and irregularity more likely.
05Why results are operator-, anatomy- and tissue-dependent
The same thread gives different results in different hands and faces.
Unlike a medicine with a defined dose, a thread’s outcome is created at the moment of placement: which tissue is engaged, at what depth, along what vector, and how well it is anchored. That is why published results are so inconsistent, and why a number from one study or one clinician cannot be promised to you. Your anatomy (how mobile the tissue is, how it is supported), your tissue quality (thickness, elasticity), and the operator’s anatomical judgement all shape the result far more than the brand of thread.
06How it differs from other options
Where a thread sits among the alternatives.
- Surgery (facelift) releases and re-drapes the deeper layers and removes skin — a greater, more durable change, with greater risk, cost and downtime. A thread does none of that and must not be sold as a substitute.
- Hyaluronic-acid filler restores volume and shape in a specific place and is largely reversible. Threads support position, not volume — different problems.
- Biostimulators prompt diffuse collagen for lost support over months; they do not reposition mobile tissue along a vector.
- Energy devices (HIFU, radiofrequency) aim to tighten tissue with focused energy for selected mild laxity — a different mechanism from mechanical suspension.
- Doing nothing — or waiting and reviewing — is always a legitimate option, and often the proportionate one.
07Why popularity rose
Popular is not the same as proven.
Barbed threads became popular because they are quick, done awake, need little downtime, and are marketed with appealing words like “non-surgical facelift”. Those are reasons for demand, not evidence of durable benefit. Systematic reviews have repeatedly concluded that robust efficacy and longevity data are still lacking,[1] and that effectiveness is questionable while safety is often under-discussed.[5] I think it is fair to let popularity explain the interest, and the evidence decide the expectation.
08Which changes and areas may — and may not — suit
Mobile mid- and lower-face tissue — within limits.
Where threads are sometimes considered: mild-to-moderate descent of genuinely mobile mid-face and jawline/jowl tissue, where gentle repositioning along a favourable vector could give a modest, natural improvement.
Where they are not the answer: fixed heaviness or significant skin laxity (surgery is more honest); volume loss (a different question); skin quality, texture or pigment; and very thin, very lax or previously operated tissue, where dimpling, contour irregularity or a visible thread is more likely. The lips and eyelids are not thread territory.
09Who may — and may not — suit
Suitability is decided in person, not from a photograph.
May be considered: adults with mild-to-moderate, genuinely mobile descent, reasonable tissue quality along the path, realistic expectations of a modest and possibly short-lived change, and acceptance that the longevity evidence is limited.
Usually not suitable: greater or fixed laxity better served by surgery; volume or skin-quality concerns; very thin or previously operated tissue; a wish for a dramatic, permanent or facelift-like result; active infection or skin disease in the area; certain bleeding disorders or medicines; pregnancy or breastfeeding; and expectations that cannot accommodate “modest”, “variable” and “temporary”.
10When another route — or none — is more appropriate
Often the honest answer is not a thread.
If laxity is greater, surgical referral offers a more reliable degree and duration. If the issue is lost volume or support, biostimulators or fillers are more direct. If it is skin quality, a skin-quality route fits better. For selected mild laxity, energy-based tightening may suit. Where a skin or medical condition needs attention, that comes first. And waiting, reviewing or simply doing nothing remains legitimate. Choosing a thread only makes sense once the problem is genuinely mild, mobile descent and the limits are accepted.
11Consultation & choosing a practitioner
Who holds the needle matters more than the thread.
Assessment separates genuine, mobile descent from volume loss, skin-quality change and bone-level change, and considers skin thickness, elasticity, existing asymmetry, previous treatment or surgery, and what a good outcome would mean to you. Where threads are appropriate, a realistic vector is planned; where they are not, that is said plainly. New patients have a cooling-off period between assessment and treatment — there is no routine same-day thread placement.
I do perform absorbable PDO barbed-thread treatment, and I also rarely recommend it proactively. The visible effect can be relatively short-lived, asymmetry is possible, and the durability evidence is limited. That is not a reason to discourage you, or to decide for you — some of my patients value the result and return for it, and I respect that. My role is to explain what it may do, what it cannot reliably do, the risks and the alternatives, so the choice is genuinely yours.
A clinical perspective·Piotr Wojtowicz
12Anatomy & why training is not equal
A one-day course is not university clinical training.
Threads pass close to nerves, vessels and glands, and the difference between a safe result and a serious complication is anatomical knowledge and judgement. There is a real difference between a practitioner whose competence rests on years of university clinical education, advanced facial anatomy and supervised practice, and one whose entire preparation was a single one-day product course. Both may hold a certificate; they are not equivalent in the knowledge that prevents harm. It is entirely reasonable to ask who is treating you, what their clinical background is, how they manage complications, and whether they will decline to treat when it is not in your interest.
13Preparation, pain & the appointment
What preparing for it, and the visit, involve.
Preparing. Discuss blood-thinning medicines and supplements at assessment, arrive without active skin infection, avoid alcohol and vigorous exercise for a day or two beforehand, and plan any social events at least two weeks away in case of bruising.
Pain & anaesthesia. Treatment is done under local anaesthetic. It is not pain-free: expect pressure, tugging and a pulling sensation as the thread is placed, and some tenderness afterwards. Most people find it tolerable, but honesty about the sensation matters.
The appointment is a sterile procedure. The specific approach — placement and the number of threads — is individual to your assessment, discussed and consented before anything is done, and not fixed in advance here. You are given time to ask questions and are under no obligation to proceed.
14Immediate appearance
Immediately afterwards there is often some tightening, together with swelling and sometimes bruising. Small puckers or dimples along the thread path are common early on as the tissue settles, and usually ease over days to a few weeks. Some asymmetry can be present initially. The look on the day includes procedural tension and swelling and is not the settled result — which is why the treatment is judged later, not in the mirror that afternoon. Puckering that does not settle, or clear asymmetry that persists, is reviewed.
15Recovery & aftercare
The first week, and what to avoid.
Bruising, swelling, tenderness and a sensation of tightness are common early and usually settle over one to two weeks. You may be asked to avoid wide facial movements and expressions, to sleep on your back with your head slightly raised, and to avoid exercise, saunas, facials and dental or facial procedures for a period advised at your appointment. Written aftercare and a review are part of the treatment. Report anything that concerns you — increasing pain, spreading redness, fever, a visible or extruding thread, or an irregular contour — so it can be assessed promptly.
16Onset, peak & duration
When results appear, and why duration varies so much.
The mechanical effect is immediate; the settled appearance is seen once swelling resolves over a few weeks. Duration is where honesty matters most: it is variable and not well established. In one randomised study, the early displacement and volume changes had largely diminished by about two months;[3] some cohorts report change persisting, by their own measures, for up to two years;[2] and a large retrospective series found no discernible lift at one year.[2] These do not average into a promise. Duration depends on technique, patient selection, tissue quality and how the outcome was measured — and because the material absorbs, support declines before it is gone.
17Repeat treatment & reassessment
Never an automatic top-up.
Because the effect fades, some people consider repeating treatment. If they do, it is a fresh clinical decision after reassessment — not a scheduled top-up on a calendar. At each point the honest options include continuing, changing to a different approach, or stopping. Repeatedly placing more threads into tissue that did not hold them well the first time is rarely the answer, and layering absorbable threads over time is not a substitute for what surgery does when laxity is genuinely greater.
18Why results disappoint
When it does less than hoped.
Disappointment usually has an explicable cause: the descent was not truly mobile, so there was little to reposition; tissue quality could not hold the suture; the realistic vector was smaller than hoped; the effect faded as the material absorbed; or — most often — the real problem was volume, skin quality or laxity that a thread was never going to fix. This is why suitability is assessed carefully first, and why the most useful thing I can sometimes do is advise against the treatment.
19Unnatural results & what can be corrected
How over-pulled or uneven results happen.
An unnatural result comes from over-correction, an aggressive vector that distorts expression, or bunching where too much tissue is gathered. Persistent dimpling, visible or palpable thread, and asymmetry are the usual signs. Many early irregularities settle; some need review, massage, or minor intervention. Because the thread is absorbable, some problems ease as it breaks down and its hold diminishes — but a clearly misplaced, extruding or infected thread may need to be removed, and a genuinely over-pulled surgical-level problem is not something a thread can create or fully undo. Not everything is fully correctable, which is another reason for conservative placement.
20Safety & risks
Common, uncommon and rare — with figures where evidence allows.
Pooled figures below come mainly from an absorbable-thread safety review (19 studies, 1,406 patients) and a wider meta-analysis; they describe groups, not your personal risk, and reviews disagree. Frequencies depend on material, area, technique, patient selection and study design.
Common — expected & temporary
Bruising (ecchymosis)
~19%The most frequently pooled effect in absorbable-thread data; settles over days to a couple of weeks.[4]
Depends onArea, technique, bruising tendency, blood-thinning medicines.
Swelling & tenderness
Swelling ~17%; tenderness ~10%Common early; a wider mixed-material meta-analysis put swelling as high as ~35%, showing how estimates vary.[4][8]
Depends onExtent of treatment, tissue, individual response.
Uncommon
Dimpling / puckering / asymmetry
~7–10%Often early and settling; higher in older patients (~16% vs ~6% over vs under 50 in pooled data).[8]
Reduced byConservative vector, correct plane, careful patient selection.
Palpable or visible thread
~4–6%A thread that can be felt or seen; may settle or need adjustment/removal.[8]
Reduced byAdequate depth, suitable tissue thickness, correct technique.
Rare
Infection
~2–2.5%Higher in older patients in pooled data (~6% vs <1%); may need antibiotics and occasionally thread removal.[4][8]
Depends onSterility, aftercare, host factors.
Thread extrusion / migration
~1.6–2%A thread working towards or through the skin, or shifting position; lower for absorbable than non-absorbable threads (1.6% vs 7.6%).[4]
Reduced byCorrect depth and anchoring; managed by review or removal.
Paraesthesia
~1–3%Altered sensation, usually temporary; lower for absorbable threads (3.1% vs 11.7% non-absorbable).[4]
Depends onDepth, anatomy, proximity to nerves.
Persistent dimpling / granulomatous reaction / alopecia
Reported, incidence uncertainDescribed in the literature but without a reliable frequency; some need review, injection or removal.
NoteTrue incidence not established — reported at case level.
Rare but serious — emergency
Nerve or vessel injury
RareFacial-nerve or vessel injury, including isolated case reports of arterial injury (e.g. superficial temporal artery pseudoaneurysm). Incidence is not reliably quantified.
Reduced byAnatomical knowledge and careful technique; urgent assessment if it occurs.
Spreading infection / abscess
RareIncreasing pain, spreading redness or fever needs prompt medical assessment and may require antibiotics and thread removal.
Act onRed-flag symptoms — do not wait; use the urgent route in your aftercare.
21Serious complications & red flags
What to watch for — and what I do.
Seek urgent help. Increasing or disproportionate pain, spreading or intense redness, fever, a thread that is visible or coming through the skin, sudden marked asymmetry or facial weakness, or a hard painful swelling — these need prompt assessment. Your written aftercare gives the clinic’s urgent route; signs of a spreading infection or nerve problem need medical help without delay.
Serious events are rare, but real: infection that spreads or forms an abscess, injury to a nerve (altered movement or sensation) or a vessel, and, at case-report level, arterial injury. Reassuringly, a referral series of patients who had already developed complications found that most (around 84%) settled with non-surgical measures — medication, massage or minor treatment — while a minority (about 16%) needed a procedure such as thread removal.[11] Because the thread is absorbable, some problems also ease as it breaks down. My priority is prevention through anatomy and conservative technique, and prompt recognition if something is wrong.
22Who should not have it
Contraindications & cautions.
- Active infection, inflammation or skin disease in the treatment area
- Significant or fixed laxity better addressed by surgery
- Very thin, very lax or previously operated tissue where irregularity or thread visibility is likely
- Bleeding disorders or blood-thinning medication — assessed individually
- A tendency to keloid or abnormal scarring, or known hypersensitivity to the material
- Pregnancy or breastfeeding
- Unrealistic expectations, or an inability to accept a modest, variable and temporary result
This is not exhaustive; suitability is decided at a full assessment, and I decline treatment where it is not clearly in your interest.
23Fees
Fees
Barbed-thread treatment is not sold from a price list, because whether it is appropriate — and if so, what is actually needed — is individual to your assessment. What matters first is establishing whether a thread could genuinely help you at all.
Comprehensive Clinical Assessment · 60 minutes£50
Focused Consultation · 20 minutesFree
The £50 consultation fee is added to your patient account as clinic credit. Any treatment fee is agreed and confirmed with you before anything is done. Full fees: fees.
24Alternatives
The honest alternatives.
- Greater or fixed laxity — surgical referral, for a greater and more durable change
- Lost volume or support — collagen biostimulators or dermal fillers
- Skin quality, texture or pigment — skin-quality treatment
- Selected mild laxity — focused ultrasound (HIFU) or other energy-based tightening
- A skin or medical concern — dermatology or other medical review first
- Mild, accepted change — no treatment, or waiting and reviewing
25Questions, answered
Barbed threads — answered.
Understanding the treatment
Is a thread lift a non-surgical facelift?
No. Absorbable PDO barbed threads mechanically support selected, genuinely mobile tissue. They do not replace lost volume, change skin quality, or match the degree or durability of surgery. Calling it a “non-surgical facelift” sets an expectation the treatment cannot meet; for greater laxity, surgery is the more honest route.
Does it build collagen and tighten skin?
A tissue-healing and collagen response around threads has been shown mainly in animal and material studies, with limited human evidence.[9] It should not be taken as proof of skin tightening or a durable lift, and I do not claim threads rejuvenate or tighten the skin.
What is PDO, and what happens to the thread?
Polydioxanone is an absorbable surgical polymer. The body breaks it down by hydrolysis over months, and its mechanical hold declines before it has fully absorbed — so nothing permanent is left, and the support is temporary.[10]
Do more threads mean more lift?
Not according to the evidence. A randomised study comparing three versus six threads per side found no intergroup advantage, and the early effect diminished by about two months in any case.[3]
Deciding & results
How long will it last?
Honestly, it varies and is not well established. One randomised study found the early displacement largely gone by about two months; some cohorts report change lasting, by their own measures, up to two years; and a large retrospective series found no discernible lift at one year.[2][3] No fixed number of months is promised.
Why do you rarely recommend it?
Because the visible effect can be relatively short-lived, asymmetry is possible, and the durability evidence is limited. That is not to discourage anyone who values the result — it is why I explain the limits first, so the choice is genuinely yours.
Will it look natural?
Done conservatively, the aim is a modest, natural improvement in the position of mobile tissue. Unnatural results come from over-correction or an aggressive vector; small early puckers usually settle, but persistent dimpling or asymmetry is reviewed.
Can it be undone?
Partly. Because the thread absorbs, some problems ease as its hold diminishes, and a misplaced, extruding or infected thread can often be removed. But not every irregularity is fully correctable, which is a reason for conservative placement.
Safety & the appointment
Does it hurt?
It is done under local anaesthetic and is usually tolerable, but it is not pain-free: expect pressure, tugging and a pulling sensation during placement, and some tenderness afterwards.
What are the main risks?
In absorbable-thread data, bruising (~19%), swelling (~17%) and tenderness (~10%) are common; dimpling and visible or palpable thread are uncommon (~4–10%); infection and extrusion are around one to two per cent; and nerve or vessel injury is rare.[4] These are group figures, not your personal risk, which is discussed at assessment.
Does who performs it matter?
Very much. Threads pass close to nerves and vessels, and safe, natural results depend on anatomical knowledge and judgement. A one-day product course is not equivalent to years of university clinical education and advanced anatomy training — it is reasonable to ask about a practitioner’s clinical background and how they manage complications.
What if I decide not to proceed?
That is entirely acceptable. A consultation is not an obligation to proceed, and no treatment — or another route — is often the honest recommendation.
26Two studies. Two different answers.
The same treatment, measured two ways.
These two studies are kept side by side and deliberately not averaged. Read separately, they show how much the reported result depends on how it was measured. This is critical appraisal, not a verdict.
Study 1
Bertossi et al., 2019
Retrospective consecutive cohort · n=160 · one technique
Reported result & follow-upImprovement immediately and at 1 month; decline by 6 months; no discernible lift at 1 year. Early complications 34% (55/160): superficial displacement 11.2%, erythema 9.4%, infection 6.2%, dimpling 6.2%, temporary stiffness 1.2%.
Done wellRelatively large for this literature; consecutive cases; serial follow-up; named complications with denominators.
Weak or unclearRetrospective, uncontrolled, single technique; no blinded independent grading or validated/3D measure; the immediate look includes procedural tension and swelling.
Can inferIn this cohort, assessed benefit was not discernible at 1 year and early events were frequent.
Cannot inferThat every PDO technique lasts under a year, or that 34% is my expected complication rate.
Study 2
Ali, 2018
Prospective, three groups · n=63 (21 per arm) · 24 months
Reported result & follow-upThread-only arm at 2 years, by the study’s own ruler-based score: 33.3% categorised as 3–6 mm lift, 57% as 1–2 mm, 9.5% as no lift; results declined over time.
The 4.8% complication figureReported study-wide: 3 events among 63 across all three groups (one thread breakage; one persistent palpability/pain; one filler-related nasal infection in the no-thread group). So 4.8% is the whole-study figure, not a clean PDO-thread rate.
Weak or unclearOnly 21 per arm; allocation and assessor independence unclear; the combination arm is confounded by repeated filler/toxin/PRP; an author-created, unvalidated ruler and satisfaction scale; no blinding, validated PROM or reliable 3D measurement.
Can inferThe authors recorded persistent but declining ruler-based displacement in a small, selected cohort.
Cannot inferA general 24-month effect, a universal 3–6 mm lift, or a 4.8% PDO-thread risk.
Taken together — no shared duration range or pooled complication number can honestly be drawn from these two. Published results are inconsistent and methodologically limited; durability and complication estimates depend on technique, patient selection and how the outcome was measured.
27Evidence map
What the evidence supports — and what it does not.
Every card reports what actually happened to patients in a specific study: how many took part, the design, the exact outcome measure, how much changed, when, how long, satisfaction where reported, each adverse effect with its numerator or percentage, the limitations, and the plain-English meaning. Cards are kept separate by study, material and design and are not pooled or transferred — and results from smooth mono-threads, non-absorbable threads or surgery do not belong here.
Retrospective cohort · barbed suture, mid/lower face
Does the lift last, and how often are there early complications?
Participants & design
160 consecutive patients, single technique, retrospective, with serial follow-up (Bertossi 2019).
Outcome & how much
Investigator-assessed improvement immediately and at 1 month; decline by 6 months; no discernible lift at 1 year.
Onset & duration
Immediate effect; benefit not discernible by 12 months in this cohort.
Satisfaction
No validated patient-reported satisfaction score reported.
Adverse effects (num/denom)
Early complications 34% (55/160): superficial displacement 11.2%, erythema 9.4%, infection 6.2%, dimpling 6.2%, temporary stiffness 1.2%.
Withdrawals
Not clearly reported.
Limitations
Retrospective, uncontrolled, single technique; no blinded/validated/3D measurement; immediate look confounded by swelling and tension.
For a patient
In a relatively large series, visible benefit was gone by a year and a third had an early complication — but this is one technique, not a universal figure.
Certainty & reference
Retrospective cohort — low · [2]
Prospective, 3-arm · thread-only arm, 24 months
Can a measurable lift persist to two years?
Participants & design
63 patients, 21 per arm, prospective with a thread-only arm followed to 24 months (Ali 2018).
Outcome & how much
Thread-only at 2 years, by the study’s own ruler-based score: 33.3% rated 3–6 mm lift, 57% 1–2 mm, 9.5% no lift; declined over time.
Satisfaction
Reported on an author-created, unvalidated satisfaction scale — not a validated instrument.
Adverse effects (num/denom)
4.8% study-wide (3/63) across all three arms — one thread breakage, one persistent palpability/pain, one filler-related nasal infection (no-thread group). Not a clean PDO-thread rate.
Limitations
Only 21/arm; allocation/blinding unclear; combination arm confounded by repeated filler/toxin/PRP; unvalidated ruler and satisfaction scales; internal inconsistency in reported percentages.
For a patient
A small, selected cohort showed declining ruler-based displacement to 2 years — encouraging but far from proof of a general two-year lift.
Certainty & reference
Prospective, unvalidated measures — low · [6]
Randomised trial · 3 vs 6 threads per hemiface
Do more threads help, and how long does the effect last?
Participants & design
22 patients randomised, split-face, 3 versus 6 threads per side (Germani 2025).
Outcome & how much
No intergroup advantage from more threads; initial displacement and volume changes had largely diminished by day 60.
Onset & duration
Immediate effect; measurable change largely gone by about 2 months.
Satisfaction
Not the focus of this trial.
Adverse effects
No serious complications reported in this small trial.
Limitations
Small sample (22); short follow-up; measures the mechanical/dose question, not long-term aesthetic benefit.
For a patient
Adding threads did not add lift, and the purely mechanical effect is short-lived — a useful counter to “more threads, more result”.
Certainty & reference
RCT (small) — moderate for the dose/duration question · [3]
Systematic review · absorbable threads only
How often do complications actually occur with absorbable threads?
Participants & design
19 studies, 1,406 patients, absorbable sutures only; 876 complications pooled (2024 safety review).
Adverse effects (pooled %)
Ecchymosis 19.49%, swelling 16.79%, tenderness 9.96%, infection 2.49%, paraesthesia 1.14%, haematoma 0.64%.
Absorbable vs non-absorbable
Absorbable threads had lower paraesthesia (3.1% vs 11.7%) and extrusion (1.6% vs 7.6%); older patients had more dimpling (16% vs 5.6%) and infection (5.9% vs 0.7%).
Efficacy / satisfaction
A safety review — efficacy and satisfaction were not its outcome.
Limitations
Heterogeneous designs, denominators and materials; pooled rates are not an individual’s risk.
For a patient
Even the “milder” absorbable threads carry a real burden of minor effects; serious events are much rarer, and absorbable is safer than permanent for nerve symptoms and extrusion.
Certainty & reference
SR/meta-analysis — moderate for AE scope · [4]
Meta-analysis · mixed materials (context)
What happens to satisfaction over time?
Participants & design
26 studies pooled (absorbable and non-absorbable together) (Niu 2021).
Satisfaction over time
Pooled satisfaction fell from 98% immediately to 88% long-term — a measurable decline as the effect faded.
Adverse effects (pooled %)
Swelling 35%, dimpling 10%, paraesthesia 6%, visible/palpable thread 4%, infection 2%, extrusion 2%.
Limitations
Mixes materials, so not PDO-specific; high heterogeneity. A separate 2025 meta-analysis (26 studies, 2,827 patients) produced different pooled figures (swelling 16%, ecchymoses 26%, dimpling 7%) — the reviews disagree.
For a patient
Satisfaction is high early and declines with time, and the “pooled risk” you read depends heavily on which review — a reason to distrust any single confident number.
Certainty & reference
Meta-analysis, mixed materials — low–moderate, not PDO-specific · [8]
The overall picture: the mechanical action is real and immediate, but the evidence for a durable, meaningful lift is weak and inconsistent, and no reliable single duration or complication figure exists. A Level-III systematic review concluded that no new evidence supports thread-lift efficacy and that patients must be told about the adverse events, the limited longevity and the poor data.[1] The biological “collagen” story rests mainly on animal and material studies.[9] On current evidence, the documented limitations and uncertainties often outweigh proven, durable benefit — which is exactly why this page informs rather than encourages, and why it is rarely where I start.
28References
References & sources
Primary trials, systematic reviews/meta-analyses, complication series and material/animal studies, each labelled by type. Preclinical (animal/material) findings are not presented as established human benefit. Regulators provide advertising context only. Access date 23 July 2026.
- Evidence-quality anchor (systematic review, Level III): Atiyeh BS, Chahine F, Ghanem OA. (2021) ‘Percutaneous thread lift facial rejuvenation: literature review and evidence-based analysis’, Aesthetic Plast Surg, 45(4), pp. 1540–1550. Concluded no new evidence supports efficacy; patients must be informed re adverse events, longevity and limited data. Available at: pubmed.ncbi.nlm.nih.gov/33471152/ (Accessed: 23 July 2026).
- Retrospective cohort (n=160; no lift at 1 year; complications 34%): Bertossi D, Botti G, Gualdi A, et al. (2019) ‘Effectiveness, longevity, and complications of facelift by barbed suture insertion’, Aesthet Surg J, 39(3), pp. 241–247. Available at: pubmed.ncbi.nlm.nih.gov/29365050/ (Accessed: 23 July 2026).
- Randomised trial (n=22; 3 vs 6 threads; effect diminished by day 60): Germani M, et al. (2025) ‘Randomised evaluation of thread number in PDO barbed-thread lifting’, Aesthet Surg J Open Forum. Available at: pubmed.ncbi.nlm.nih.gov/40236886/ (Accessed: 23 July 2026).
- Safety systematic review, absorbable threads only (19 studies / 1,406 patients; pooled AE rates): (2024) ‘Safety and complications of absorbable thread lifting: a systematic review’. Available at: pubmed.ncbi.nlm.nih.gov/39442180/ (Accessed: 23 July 2026).
- Safety systematic review (59 articles; effectiveness questionable, safety under-discussed): Pham CT, Chu S, Foulad DP, Mesinkovska NA. (2021) ‘Safety profile of thread lifts on the face and neck: an evidence-based systematic review’, Dermatol Surg, 47(11), pp. 1460–1465. Available at: pubmed.ncbi.nlm.nih.gov/34699439/ (Accessed: 23 July 2026).
- Prospective 3-arm study (n=63; thread-only arm to 24 months; unvalidated measures): Ali YH. (2018) ‘Two years’ outcome of thread lifting with absorbable barbed PDO threads’, J Cosmet Laser Ther. Available at: pubmed.ncbi.nlm.nih.gov/29399953/ (Accessed: 23 July 2026).
- Prospective single-arm (n=30; favourable WSRS/GAIS at 6 months; no comparator): Park (2025) ‘Midfacial lifting with 3D bi-directional barbed PDO threads: a prospective study’, Aesthetic Plast Surg. Available at: pubmed.ncbi.nlm.nih.gov/41145860/ (Accessed: 23 July 2026).
- Meta-analysis, mixed materials (26 studies; satisfaction 98%→88%; pooled AE): Niu Z, Zhang K, Yao W, et al. (2021) ‘A meta-analysis and systematic review of the incidences of complications following facial thread-lifting’, Aesthetic Plast Surg, 45(5), pp. 2148–2158. Available at: pubmed.ncbi.nlm.nih.gov/33821308/ (Accessed: 23 July 2026).
- Tissue/collagen response — preclinical (animal): Kim J, et al. (2017) ‘Description of a PDO thread and the resulting histological response’, Dermatol Surg (guinea-pig); with Yoon (2019, pig) and Ha (2022, rat). Animal evidence only — not established human benefit. Available at: pubmed.ncbi.nlm.nih.gov/27748691/ (Accessed: 23 July 2026).
- PDO degradation — material science: Ooi CP, Cameron RE. (2002) ‘The hydrolytic degradation of polydioxanone’, J Biomed Mater Res, 63(3), pp. 280–290; with Martins et al. (2020) PDO implant review. Mechanical support declines before full absorption; timing is device- and tissue-specific. Available at: pubmed.ncbi.nlm.nih.gov/12115759/ (Accessed: 23 July 2026).
- Complication-management referral series (most settle without surgery): Facial thread-lifting complication cohort — among patients referred with complications, ~83.6% resolved with non-surgical measures and ~16.4% needed a procedure. Denominator = complications, not the treated population, so it cannot give incidence. Available at: pubmed.ncbi.nlm.nih.gov/34549008/ (Accessed: 23 July 2026).
- Advertising context (not treatment evidence): Advertising Standards Authority / CAP. ‘Cosmetic interventions’. Available at: asa.org.uk/resource/cosmetic-interventions.html (Accessed: 23 July 2026).
This page is general information about a medical procedure — not individual medical advice, a recommendation, or an advertisement. It does not promise a surgical facelift, a permanent lift or a guaranteed duration. Suitability is decided only after a face-to-face assessment and treatment is never guaranteed.
