Facial sagging: when is a thread lift the right conversation?

Sagging isn’t one thing

When someone tells me their face is sagging, they’re describing what they see in a photograph. What I have to work out is what’s happening underneath it, because sagging is a description, not a diagnosis.

Your face is built in five layers. From the outside in: skin, a layer of superficial fat, the muscle and the fibrous sheet it sits in, a deeper layer of fat, and bone.

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Each layer does something different. The skin is the covering. The superficial fat gives the soft contour you actually see. The sheet under it, the SMAS, is what everything hangs from. The deep fat sits in compartments and props the whole structure up from beneath. The bone is the frame it’s all built on.

That last point is the one most explanations skip, and it’s why no single treatment fixes everything.

What actually changes, layer by layer

The skin thins. Not evenly, and not the part you’d expect. The outer layer stays fairly stable across the decades. It’s the dermis underneath, the layer holding your collagen and elastic fibres, that thins steadily, and the change becomes obvious from the fifties onward.

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The superficial fat slides down. Those pads aren’t one continuous sheet. Cadaver dissection showed the facial fat is partitioned into separate, independent compartments with their own boundaries.1 As the ligaments and septa holding them loosen, the pads descend. CT studies of the midface have tracked that downward shift with age.2

The sheet beneath loosens. The SMAS stretches, so what it’s carrying sits lower.

The deep fat shrinks. You lose the prop from underneath, so the surface has less to sit on.

The bone recedes. The eye socket opens out, the jaw angle blunts, and the midface loses projection. The frame itself gets smaller.

So a face doesn’t simply fall. It deflates and descends at the same time, and the balance between those two differs enormously from person to person. Two people the same age, with what looks like the same complaint, often need completely different treatments.

When it’s the skin: energy devices

If the main problem is skin quality, meaning crepiness, fine lines and a surface that’s lost its spring, then the target is the dermis and an energy device is the right tool.

Morpheus8 combines microneedling with radiofrequency. Fine points deliver heat into the dermis and the layer just below it. The heat creates a controlled injury, and the healing response lays down new collagen over the following months.

Ultherapy uses focused ultrasound to create small, precise points of heat at set depths. It reaches deeper than most devices, including down towards the SMAS.

Both tighten and stimulate. Neither moves anything. That distinction is the whole article, so it’s worth sitting with. If your tissue has physically travelled downwards, heating it will not carry it back up.

When it’s the fat pads

Look at the diagram below. The mid-cheek, nasolabial and marionette pads have slid down. The pad that used to sit high on the cheekbone now rests against the fold beside the mouth.

That fold isn’t a line etched into the skin. It’s a boundary where descended tissue has piled up above it. You could resurface it indefinitely and it wouldn’t move, because the problem isn’t the surface.

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One option here is a barbed thread. It’s worth understanding how one actually holds, because the mechanism explains both what it can do and why it stops.

The thread carries small projections angled along its length. It is introduced through a cannula pointing the same way the barbs lie, so it slides in without catching on anything. Then it is drawn back in the opposite direction. Now the barbs are working against the tissue instead of with it, and they embed, transferring the force that holds the tissue up.3

What they embed into is not fat. Fat on its own is soft and holds nothing. The barbs catch on the fibrous septa, the thin connective strands that run through the fat layer between skin and SMAS. Those strands are the anchor. This is why the same thread behaves differently from one person to the next and from one area to another: firm, fibrous tissue grips well, thin or atrophic tissue grips poorly, and in places where the fat is more gelatinous the barbs barely engage at all.

Aptos threads are bidirectional. The barbs face opposite ways from a central point, so the thread holds itself between two sets of tissue engagement rather than being tied to anything.3 This is called a free-floating thread, and it is the design Sulamanidze introduced in the 1990s. The other approach anchors a one-directional thread to a fixed point higher up, such as the temporal fascia.

Free-floating is the less invasive of the two. It’s also the reason the lift fades. With nothing fixed to pull against, the tissue gradually stretches and the barbs progressively disengage. That is the actual mechanism of loss, and it is why the result at three months is not the result at twelve.

The material sets the timeline. Aptos threads are a copolymer of polylactic acid and caprolactone, which breaks down over roughly nine to twelve months. Tensile strength falls away before the material has gone, so the mechanical support weakens earlier than the thread disappears.

Separately, the body treats the thread as a foreign object and lays down collagen around it. This is where the claim that results outlast the thread comes from. It’s plausible, and it’s the second half of the manufacturer’s account, but it’s the weaker half, and much of the supporting work comes from authors affiliated with the manufacturer.

Reported duration sits somewhere around twelve to eighteen months. A prospective, evaluator-blinded study in patients with mild to moderate laxity found absorbable barbed threads effective and well tolerated, while noting plainly that their visible lifting effect does not last as long as non-absorbable threads because they begin to be reabsorbed from around six months.4 The literature also describes the best candidates as people with mild descent wanting a small lift, rather than significant laxity.

Some further mechanics that matter. Shorter barbs grip more strongly than long ones. More threads spread the load across more anchor points, which reduces dimpling and uneven lift. And a thread with no barbs at all lifts nothing, whatever it is sold as, because there is nothing for the tissue to catch on. Threads differ substantially in material, construction and what they can mechanically achieve.5

Threads don’t tighten skin or replace lost volume, and nothing is removed. What they do is shift tissue that’s still there, by a limited amount, for a limited time.

Which layer, and why it matters. Threads belong in the deep part of the superficial fat, sitting immediately above the SMAS rather than in it.6 Too shallow and you get puckering, dimpling and threads that can be seen or felt. Too deep is the more serious error, because the branches of the facial nerve run beneath the SMAS, and that is not a plane any thread should be entering.6

A disclosure, because you should have it. I’m an Official Trainer for Aptos, which means I have a commercial relationship with the company whose threads I’ve just described. That’s precisely why I’d rather be known for telling people when threads aren’t the answer.

When it’s neither

Threads lift what’s there. They can’t replace what’s gone. If the deep fat has atrophied and the underlying bone has receded, lifting the surface tissue over a smaller frame doesn’t restore the shape you remember. It can even look pulled.

And if there’s genuine excess skin, that’s a surgical problem. A thread lift is not a facelift. Surgery removes tissue. Threads reposition it. Any clinic blurring those two things is selling rather than assessing, and the right move then is a referral to a plastic or facial surgeon.

There’s also a fourth answer that nobody advertises. Early laxity in your thirties, in skin that’s otherwise healthy, is very often best left alone. Daily sun protection and a topical routine you actually stick to will do more for the next decade than a treatment done too early.

How we actually work it out

None of this can be decided from a photo you’ve sent through, and none of it can be decided from a price list.

• VISIA imaging photographs and analyses your skin, including sun damage and pigment sitting below the surface that isn’t visible yet. This tells us about the skin layer specifically.
• Aura 3D imaging captures your face in three dimensions, which shows volume and asymmetry in a way flat photographs can’t, and gives us something to measure against later.
• Examination. I put my hands on your face. How tissue moves when it’s lifted, where it moves from, and where it stops tells me things no scan does.
• History and lifestyle. Medical history, medications, previous treatments, smoking, sun exposure, weight changes and what your weeks actually look like. All of it changes both what will work and what’s wise.

The imaging doesn’t decide anything on its own. It gives us a shared starting point, and it stops the conversation being about what you saw on Instagram.

What recovery actually looks like

• The first few days. Swelling, bruising and a tight, pulled sensation when you move your face. Small dimples or puckering at the entry points are common early on and usually settle as things relax.
• The first two weeks. Sleep on your back, avoid facials, massage and anything that stretches the face. No wide mouth opening where you can help it, so postpone dental work. Most people are socially presentable within a few days, though bruising varies.
• Weeks four to twelve. The mechanical lift settles and the collagen response builds gradually. What you see at three months is a fairer reflection than what you see on day one.

Energy device recovery is different again and depends on the device and settings used. Some people need more than one treatment.

Risks, and what can go wrong

Expected: swelling, bruising, tenderness, tightness, and temporary irregularity or puckering of the surface.

Less common: asymmetry, a thread you can feel or see under the skin, dimpling that persists and needs review, infection, prolonged pain, irritation of a nerve causing altered sensation, and a thread working its way towards the surface. Rarely, a thread needs to be removed.

There is also the risk of an underwhelming result. Threads produce a real but modest lift, and if you’re expecting a surgical outcome from a treatment that takes an hour, you’ll be disappointed no matter how well it’s done.

We go through all of this properly before anything is booked. Our Risks & Complications page sets it out in full.

When the answer is no

• You have an active infection or inflamed skin in the treatment area.
• You’re pregnant or breastfeeding.
• You have a bleeding disorder or take blood thinners, which needs discussing before anything is planned.
• You have significant excess skin. That’s a surgical conversation and I’ll say so.
• You have a history of keloid scarring, or of nodules and problems after previous treatments.
• You want a face that looks different rather than a face that looks like yours, rested.

How we decide together

The honest version is that most faces aren’t one problem. There’s usually some skin change, some descent and some volume loss all at once, in a mix that’s specific to you. The question isn’t which treatment is best. It’s which layer is contributing most to the thing that bothers you, and whether treating it is worth what it costs you in money, recovery and risk.

That might mean an energy device, or threads, or both in a particular order. It might mean a referral to a surgeon. And fairly often it means sunscreen, patience and a review in twelve months, which is not the answer most people are expecting from a cosmetic clinic.

Suitability, technique and whether treatment is offered at all are decided at your consultation, not online. A consultation doesn’t guarantee treatment will be offered. Individual results vary. No outcome guaranteed.