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Thread Lift Complications —
Correct Or Wait

Atelier Aesthetics · Medical Director: Dr. Sin Yong · Updated 23 Oct 2026

Most thread lift problems fall into four groups: dimpling, threads that can be seen or felt, asymmetry, and infection or nodules, with nerve or duct injury as a rarer problem of depth. This page explains what causes each, what Dr Sin Yong can correct at Atelier, what is better left to resorb, and which signs need a same-day assessment.

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The Mechanism

Plane, Vector, Tension, Thread

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A lifting thread is absorbable and barbed. Once placed, it holds descended tissue towards an anchor point. At Atelier the threads are PDO, PLLA or PCL. The intended home for a lifting thread is the subcutaneous fat: below the dermis, above the SMAS. How the procedure itself is done is set out on the thread lift page.

When a thread lift goes wrong, the cause is almost always one of four things.

Cause One
Plane
Too shallow, and a barb catches the underside of the dermis or the thread shows. Too deep, into or below the SMAS, and it reaches the layer where facial nerve branches and the parotid duct run.
Cause Two
Vector
Each side of the face is lifted along its own direction. If the two sides are lifted along different vectors, or under different tension, they can end up uneven.
Cause Three
Tension
A thread pulled tighter than the tissue can spread will pucker the skin. In heavy tissue, it may cut through instead of holding.
Cause Four
Thread
An end left proud can work out at the entry point and give bacteria a track to follow. Separately, the body can form a foreign-body reaction, a granuloma, around the thread.

Types

What Each Problem Looks Like

Mild swelling, tenderness and some bruising for the first few days are expected, as are a little pulling and a few small dimples early on. The problems below are what remains, or appears, outside that.

Rarer, and different in kind, are injuries from a thread placed too deep: weakness of part of the face if a nerve branch is involved, or a collection of saliva under the skin if the parotid duct is. Both need prompt assessment.

Specifications

Region
Jawline, jowls, midface, brow and neck, wherever threads were placed
Assessment
Examination of how the threads sit now, with the date, thread type and areas from your record
Modalities
Release of a catch; trimming or withdrawal of a thread; antibiotics after examination; time while threads resorb
Review
Same day for infection; promptly for any change in movement; dimples and asymmetry once swelling has settled
Type I
Dimpling
Small hollows at an entry point or along a thread. Most flatten within days to weeks as swelling settles. One that stays usually means a barb is holding the dermis; it is more likely in thin skin and over the cheek.
Type II
A Thread You Can See Or Feel
A thread placed too shallow, under very thin skin, or with an end not trimmed flush. An end appearing at the entry point is called extrusion.
Type III
Asymmetry
Uneven swelling is common in the first weeks and is not the final position. What persists can come from unequal vectors or tension, or from a thread that has slipped, moved or torn through heavy tissue.
Type IV
Infection And Nodules
Infection shows as pain that builds, spreading redness, warmth, growing swelling or discharge. A firm lump appearing weeks or months later without those signs may be a granuloma.

The Decision

Correct What Can Be, Let The Rest Resorb

At Atelier, Dr SY starts from how the threads sit now and what was placed, if your record says. Early dimples and uneven swelling are given time first; the planned check at two weeks exists for this.

What can be corrected. A dimple that outlasts the swelling can be released, an exposed end trimmed, a vector added on the lower side, a migrated thread retrieved while intact, and infection treated with antibiotics after examination.

What is left to resorb. A settled thread in the right plane that can still be felt, mild asymmetry from heavier tissue on one side, a quiet granuloma, and the collagen track along each thread. PDO resorbs earliest and PCL slowest, so the material sets the wait. Unlike hyaluronic acid, which can be dissolved, a thread cannot be dissolved on demand, which is why vectors are planned with you sitting up.

When threads were not the right tool. Threads move tissue; they do not tighten skin. The assessment works out whether laxity, descent or volume loss is the real issue. Laxity points towards energy-based tightening such as HIFU, volume loss towards volume restoration, and a sagging face may need a combined plan. Advanced sagging is a surgical question, and you are told if that applies.

Thread Lift

Safety

Warning signs: when to get help now

Swelling, tenderness and bruising in the first few days are expected, and so is tightness when opening your mouth wide for a week or two. The signs below are not.

  1. Same day: contact the clinic that treated you if pain is getting worse instead of easing, redness spreads out from an entry point, the area turns warm, swelling grows, there is any discharge, or you develop a fever. These suggest infection.
  2. Promptly, without waiting to see: any change in how part of your face moves, or a collection of fluid under the skin. These need assessment, not observation.
  3. A thread end poking through the skin: arrange to have it trimmed back, since an exposed end is a way in for bacteria.
  4. A dimple or asymmetry still there once swelling has gone: book a check, and do not massage it at home.
  5. A firm lump weeks or months later: have it examined rather than rubbed.

FAQ

Thread Lift Complications — Common Questions

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Most early dimples flatten within days to weeks as the swelling goes down and the tissue settles around the thread. One that is still there after the swelling has gone usually means a barb is holding the underside of the skin. Dr SY can release it with gentle manipulation or a fine needle, without taking the thread out. It is examined rather than massaged at home.
Not always. A thread in the right plane that has settled is usually left to resorb. If an end has broken through at the entry point, it is cut back below the surface and the entry point cleaned, since an open end lets bacteria in. An intact thread that can be felt can sometimes be withdrawn through its entry point, and the chances are better early on.
Give it time first. Swelling often settles at different rates on each side, so the first weeks do not show the final position, and most faces were not symmetrical to begin with. If a difference remains once the swelling has gone, Dr SY looks for the cause, such as unequal tension or a thread that has slipped, before deciding whether anything needs adjusting.
Pain that is getting worse rather than better, redness spreading out from the entry point, warmth, swelling that grows, any discharge, or a fever. Any of these needs assessment and treatment the same day. Infection is treated with antibiotics after examination, and a thread that is keeping an infection going may need to be removed.
It is possible if a thread goes deeper than the subcutaneous fat, into or under the SMAS, where facial nerve branches and the parotid duct lie. Injury there can weaken part of the face or cause a collection of saliva. Both are described as infrequent in the published safety literature, and both are assessed promptly rather than watched. This is why the fat above the SMAS is the intended plane for lifting threads.
Not necessarily. A thread that cut through heavy tissue failed for a mechanical reason, and a different mechanism may suit better than adding threads. Energy treatments such as HIFU tighten lax tissue but do not reposition it, so they are not a direct fix either. The assessment first works out which of laxity, descent or volume loss is driving the problem, and the plan follows.

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Related at Atelier

Related
Thread Lift
PDO, PLLA and PCL threads: who they suit, the day itself and recovery.
Related
Bliss Lift
Dr SY's thread technique: repositioning tissue, not removing it.
Related
What A Thread Lift Can Do
What threads can achieve, and how long the lift lasts.

References

  1. Systematic review of the safety profile of thread lifts on the face and neck. Dermatol Surg. 2021 (PubMed 34699439).
  2. Facial thread lifting complications. J Cosmet Dermatol. 2025 (PubMed 39760325).
  3. Anatomical considerations for thread lifting procedure. J Cosmet Dermatol. 2025 (PMC11743344).
  4. Ministry of Health, Singapore
  5. HealthHub, Singapore — public health information

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