Tear Trough Filler: Patient Guide
The tear trough narrows the filler question to one thing, and it is the question most people arrive having already answered wrongly. A hollow under the eye is a deficiency, and material placed into it softens the shadow the hollow casts. A herniated fat pad is a mound, and material placed beneath a mound makes the eye read heavier than it did before the first appointment. The skin here is the thinnest on the face, the drainage is the poorest, and the vessels that supply the area sit close to the plane the material goes into. Telling a hollow from a bag, judging how little is enough, and knowing in advance how a result can be taken back — that is what this site is about.
Chongqing West District Hospital, a tertiary general hospital in Jiulongpo District, Chongqing. Patient education reviewed by Ke He, MD. Every filler result is temporary and no outcome can be guaranteed.
The tear trough decision, in seven lines
The decision this site turns on is not whether filler is a reasonable treatment; it is whether what you can see under the eye is a hollow or a bag. A hollow is a deficiency, and material placed into it softens the shadow the concavity casts; a bag is a herniated fat pad, and material placed beneath it makes the mound read heavier rather than lighter. The two look the same in a photograph, which is why the assessment decides the outcome and the injection only carries it out. The skin of the lower lid is the thinnest on the face, so material placed too near the surface can show through it as a grey or blue-grey tint, and a lump here is visible in a way a lump elsewhere on the face is not. This region also drains the worst on the face, so swelling lasts longer here than anywhere else, is worse in the morning, and is still not judgeable at two weeks. The infraorbital vessels run close to the plane the material is placed in, and material entering one of them can travel toward the eye; that is a time-critical emergency rather than a cosmetic problem, and it is what decides the setting this treatment belongs in. Only the reversible class can be broken down, breaking it down is a procedure with its own risks rather than a clean undo, and repeated filling of thin skin is how under-eye puffiness develops.
What changes under the eye, and what does not
Two of these are changes an injection can make. Five are problems that people bring to a tear trough consultation and that an injection does not answer, which is why the assessment comes before the material.
The hollow itself
Where the tissue beneath the lid has thinned or the cheek has moved down, a groove forms between the lid and the cheek, and the surface goes inward. Material placed into that depression fills it, and the surface becomes continuous again. This is the one change the treatment is for.
The shadow the hollow casts
Much of what reads as darkness under the eye is a cast shadow rather than colour in the skin. Filling the concavity changes the angle the light meets, so the shadow softens and the eye can read less tired even though the skin itself has not lightened at all.
A fat pad — not changed
A herniated fat pad is a mound that projects forward from the orbit. No injected material removes it, repositions it or shrinks it, and material placed beneath a mound makes the eye read heavier rather than lighter. When the mound is the problem, the answer is an operation.
The colour of the skin — not changed
Under-eye darkness has three sources: shadow, pigment and visible vessels. Only the first is a shape problem. Pigment and vessels are a colour problem, and a treatment that changes the contour of the area does nothing about them.
Skin thickness — not changed
The lower lid skin is thin in some people to the point that the muscle and the vessels beneath it show through as a bluish tone. Nothing injected thickens skin, and thin skin remains thin, which is why material under it stays visible.
Where the lid sits — not changed
A lid margin that sits low, or a lid that has already lost tone, is not raised by adding volume beneath it. Weight added under a lid that cannot hold its position tends to make the problem more obvious rather than less.
Fluid behaviour — not changed
This region collects fluid and drains it slowly. Filling it does not change that, and repeated filling raises the baseline until the under-eye is puffy in a way that no longer resolves overnight. That puffiness is one of the ways a treated eye comes to look treated.
Who the tear trough injection suits, and who it will disappoint
This area suits a true hollow with the tissue still in place: a groove between the lid and the cheek, a shadow that moves when the light moves, no mound projecting above it, and skin that is thin but not transparent. It suits someone whose under-eye does not swell much in the morning, who has no history of thyroid eye disease, who is not pregnant or breastfeeding, who has no active infection or broken skin in the area, and who accepts a temporary result with a review visit built into the plan. It also suits the patient who can describe what they see rather than what they would prefer to have, because the two are often different problems in this area. The people most often disappointed are the ones whose dominant problem is a fat pad. Material beneath a mound makes the eye heavier, and because that happens gradually across visits it is usually the patient who notices last. Thin skin with visible muscle disappoints for a related reason: the material can be seen through the skin it sits under. A face that retains fluid disappoints because the result cannot be judged reliably — puffiness that is worse on waking and eases through the day is the tissue behaving, not the treatment failing, but it makes every review uncertain. Anyone with previous under-eye treatment that has never settled should not be filled again; the material already there is part of the problem. Thyroid eye disease, active eyelid or eye inflammation, and recent eye surgery all change the anatomy and the timing and need assessment before anything is planned. And there is the group that should not start at all: patients for whom a temporary result is unacceptable, and patients who want the darkness gone. Filler changes a contour. It does not lighten skin.
The lower-lid decisions inside the treatment
The substance classes and the general question of whether to have filler belong to the filler pages rather than to this one. What follows is what changes when the target is the tear trough.
How deep the material goes
This is the whole treatment in one decision. Material placed deeply, against the bone and beneath the muscle, fills the hollow and stays out of sight. Material placed close to the surface fills the same hollow and shows through the thinnest skin on the face as a grey or blue-grey tint. The plane is chosen from the examination, not from habit.
Which instrument and where it enters
A blunt cannula entered from the cheek reaches the tear trough along a route that avoids the lid itself, and it covers a wider area from one entry. A sharp needle gives more control at a single point and a higher chance of entering a vessel directly. The choice follows the anatomy of the individual, and both are used.
Which part of the trough
The groove is not one target. Its inner end, beside the nose, sits over the angular vessels and behaves differently from its outer end, where it merges into the cheek. Treating too far outward adds weight to the upper cheek and makes the lid look heavier; treating too far inward is where the vessel risk concentrates.
How little is placed
The technique in this area is deliberate under-correction. Thin skin tolerates very little material before it changes texture, and the difference between a softened shadow and a visible ridge is small. Most plans place less than the hollow appears to need and add at the review if the shape asks for it.
Where this sits in a wider plan
Where the cheek, the temple or the midface are treated in the same plan, the order matters, because supporting the cheek changes what the tear trough reads like. A trough treated before the cheek is often treated twice. The sequence is decided at the assessment rather than session by session.
A course that runs slower here than anywhere else on the face
The lower lid does not recover like the rest of the face, and most of the difficulty in this area comes from judging it too early. On the day itself the area puffs at once, and a faint grey tinge can appear where the skin is thinnest; both are partly the material and partly the swelling that has already started. Swelling is at its worst over the first three days, and the shadow often looks deeper rather than lighter, which is the opposite of what was expected. Bruising is common here and can track downward onto the cheek. Through the first fortnight the swelling settles slowly, because drainage in this region is poor and the tissue is loose. Puffiness that is present on waking and eases through the day is expected for weeks. The review point sits at four to six weeks rather than at the end of the first week, for a specific reason: a lump, a ridge or a grey tint can only be judged as real rather than as swelling once the fluid is gone, and most of what alarms people at two weeks has resolved by six. A result that is not settled at four months is unlikely to change much further. The longer part is the course. The effect fades, and thin skin shows the loss earlier than thicker areas do, so repeat sessions are the usual pattern and each one begins from the shape the last one left. That matters more here than anywhere else, because repeated filling of thin skin in a region that drains poorly is how under-eye puffiness develops. If the original problem was a bulge rather than a hollow, the third month is when that becomes clear, and the answer at that point is an operation rather than more material.
The risks that belong to this area
The tear trough carries the general risks of any injection and several that are particular to it. The infraorbital vessels and their connections run close to the plane the material is placed in, and they vary in position between people. Material entering one of them can travel, and the direction it can travel in reaches the circulation around the eye. The skin can be lost, and in rare cases vision is affected. This is time-critical rather than cosmetic, and the outcome depends on how quickly it is recognised and treated, which is why the treatment belongs in a setting that knows what to do in the first ten minutes. Severe pain out of proportion to the injection, or skin turning white, grey, mottled or dusky, needs immediate assessment, and any change in vision needs emergency care. The second risk belongs to the skin. The lower lid is the thinnest skin on the face, so material placed too near the surface can show through it as a grey or blue-grey tint, and a lump here is visible in a way a lump in the cheek or the jaw is not. Some lumps soften over weeks; some need dissolving; some become visible only when you smile or look up. Third, the region drains poorly. Swelling lasts longer here than anywhere else on the face, morning puffiness can persist for months, and repeated treatment raises the baseline until the under-eye is puffy in a way that reads as a bag. Fourth, there is accumulation. Each session begins from what the last one left, so the eye can end up heavier than it started without anyone deciding that it should. Fifth, only the reversible class of material can be broken down at all, and dissolving is itself a procedure with its own risks rather than a clean undo. Delayed inflammatory reactions can appear weeks or months after treatment, sometimes after an unrelated illness or a dental procedure. And the limit that matters most: filling a bulge makes it worse, so a mound that is treated as though it were a hollow is made more obvious by the treatment rather than less.
What else is on the table, including nothing
Doing nothing is a reasonable option and, for an early hollow or a family shape, usually the best one. The lower lid is an area where the honest refusal rate is high, because the two commonest problems are treated in opposite directions and only one of them is a filler problem. Where a fat pad is the problem, lower eyelid surgery is the answer: an operation that repositions the fat or removes it, sometimes with a release of the structure that holds it, and the only treatment in this area that changes a mound. It is a different procedure with a different recovery and its own risks, including a change in lid position and dryness, and it is not a correction of the filler so much as a treatment of the eye that now exists. Where the darkness is pigment or visible vessels rather than a shadow, the target is colour rather than shape: topical treatment for pigment, light-based treatment in selected cases, and the general measures of sleep, fluid, salt and allergy control. Energy-based tightening of the lid skin changes the surface modestly and temporarily and does not remove a fat pad. Fat transfer uses your own tissue placed surgically and holds considerably longer than an injectable, at the price of a donor site and a proportion that is reabsorbed; it also does not remove a fat pad. Camouflage does more than most people expect, and saying so is part of an honest consultation. And waiting is always available. Nothing about a hollow under the eye is urgent, and an area that has been watched across a year is easier to plan for than one that has been treated across a year.
Who reviews these guides
Ke He, MD, Deputy Director of the Plastic Surgery & Aesthetics Medical Center and head of its skin and laser aesthetic service, is the responsible physician for this site. The tear trough is the area where her practice most often answers no, and for a reason that is anatomical rather than cautious: the thinnest skin on the face sits over a region that drains poorly and carries vessels close to the plane the material goes into, and a mound treated as though it were a hollow is made worse by the treatment. She assesses the lid at rest and in movement, before and after looking up, establishes whether the shadow comes from a hollow or from a herniated fat pad, and treats that distinction as a clinical finding rather than a matter of preference. Where the honest answer is lower eyelid surgery, a different specialty, or no treatment at all, that is the answer she gives at the assessment rather than after a course of injections. Her injectable work is framed by substance class rather than by brand, and her stated discipline here is deliberate under-correction with the exit plan agreed before the first injection. Her full credentials, memberships and publications are listed on the medical team page. Every guide here is reviewed against her clinical judgement before publication and reviewed again on a twelve-month cycle.
The rest of the cluster
What filler is, whether to have it at all, and how the substance classes differ are answered on the dermal filler procedure pages, which this site narrows rather than repeats. The medical system behind injectable treatment is explained by the injectables and minimally invasive aesthetics authority site, and Dr. He’s own assessment process is set out on her physician site. Two neighbouring problems decide what is actually being looked at: if the darkness is colour rather than contour, see dark circles, and if the mound is the finding, see eye bags. The comparison that settles the commonest disagreement is lower blepharoplasty or filler, and where the hollow is part of a larger volume deficit, fat transfer or filler sets out what a surgical alternative changes and what it costs in recovery. Before any treatment, quality and surgical safety describes how safety is organised inside the hospital, and appointments explains how to arrange an assessment.
Tear trough filler: the course, and the bulge it cannot fix
One session and the year that follows it, which is the unit this area is actually planned in. The lower lid does not recover like the rest of the face: it drains slowly, it shows material through thin skin, and it is not judgeable for weeks. Durations vary with the substance class and with the individual, and your own response sets your interval rather than an average.
The tear trough guides
Twelve guides, each answering one decision about the lower lid. Read the two or three that match your situation rather than all of them; the first one decides what the others mean for you.
Hollow or Bag? The First Question Before Tear Trough Filler
A hollow and a bag cast a similar shadow and are treated in opposite directions. The tests that separate them, and why the answer decides what follows.
Read the guide →Why Filling a Bulge Makes It Worse
Material placed beneath a herniated fat pad raises the surface around a mound that is still there. The mechanism, and what does answer a bulge.
Read the guide →What Tear Trough Filler Changes, and What It Does Not
It softens a hollow and the shadow the hollow casts. It does not remove a fat pad, thicken skin, lighten pigment or change where the lid sits.
Read the guide →Who Is a Poor Candidate for Tear Trough Filler
Thin skin with visible muscle, a true fat bulge, faces that retain fluid, thyroid eye disease, and under-eye filler that has never settled.
Read the guide →How the Lower Lid Is Assessed Before Any Injection
Lid tone, the position of the fat compartments, skin thickness, fluid behaviour, and how the shadow changes when you look up.
Read the guide →Thin Skin and the Risk of a Grey Tint
The lower lid is the thinnest skin on the face, and material placed near the surface can be seen through it. Depth, amount, and what can be done afterwards.
Read the guide →Start with the finding, not the injection
Arrange an assessment. We will establish whether the shadow under your eye comes from a hollow or from a herniated fat pad, explain what an injection can and cannot change in your case, and set out the alternatives, including leaving the area alone.
Frequently asked questions
How do I tell a tear trough hollow from an under-eye bag?
A hollow is a depression between the lid and the cheek, so the surface goes inward and the shadow is cast by the concavity. A bag is a mound of orbital fat that projects forward, so the surface comes outward and the shadow falls below the overhang. Looking up stretches the lid and makes the difference easier to see, and a shadow that moves when you move the light is a shape problem rather than a colour one.
Can filler get rid of under-eye bags?
No, and it usually makes them look worse. A bag is a herniated fat pad, and material placed beneath a mound raises the surrounding surface without lowering the mound, so the eye reads heavier than it did. Where the fat pad is the finding, the treatment that addresses it is an operation that repositions or removes it, and no injected material substitutes for that.
Why did my under-eye filler turn grey or blue?
Because the lower lid is the thinnest skin on the face. Material placed close to the surface can be seen through the skin, and the tint comes partly from the material itself and partly from light passing through thin skin over a pale or bluish underlayer. Some of it is swelling and settles over the first weeks; a tint that is still there at the review is more likely to be the depth it was placed at.
Why is under-eye swelling taking so long to settle?
This region drains poorly compared with the rest of the face, so fluid collects while you are lying flat and clears slowly during the day. Puffiness that is worst on waking and eases by mid-afternoon is expected for weeks rather than days, and it is one of the reasons the review point sits at four to six weeks instead of at the end of the first week.
Can tear trough filler be dissolved if I do not like it?
Only if the reversible class was used, and only partly. The enzyme that breaks down hyaluronic acid acts on your own tissue in the same area as well as on the product, so the under-eye can look flatter afterwards than it did before treatment began. It is injected, so it carries its own bruising, swelling and rare reaction risk, and it does not remove stretched skin or a contour that changed over years.
Is the tear trough a more dangerous place to inject than other areas?
It carries a specific risk rather than a general one. The infraorbital vessels run close to the plane the material is placed in, in positions that vary between people, and material entering one of them can travel toward the circulation around the eye. That is a time-critical emergency and not a cosmetic problem, which is why the question of what is behind the operator matters here more than it does in many other areas.
Part of Tired-Looking Eyes — 11 sites on this topic