Tear trough fillers: who they are for and who they are not

TL;DR

• Tear trough fillers place a small amount of soft hyaluronic acid gel into the hollow between the lower eyelid and the cheek, to soften the shadow it casts.
• They work best for a genuine hollow with good skin quality and little puffiness. They do not fix puffy eye bags, loose skin, fluid retention or brown pigmented dark circles.
• On the wrong candidate, filler can make the area look puffier, lumpier or bluish, so the assessment matters more than the injection.
• Most side effects are mild bruising and swelling, but delayed swelling and rare vascular complications are documented, so choose a medically qualified injector who can dissolve filler if needed.
• At CoLaz, tear trough filler is reserved for our doctor tier and always starts with a free consultation, with the plan and price confirmed in writing.

Tear trough fillers are one of the most requested under-eye treatments we see across our seven UK clinics, and one of the treatments we turn people away from most often. That is not because the treatment does not work. It works very well on the right face. The honest answer is that under-eye concerns have several different causes, and filler only addresses one of them. This guide sets out who tear trough filler is for, who it is not for, and what to ask before anyone goes near your lower eyelid with a syringe.

What are tear trough fillers?

Tear trough fillers are small injections of soft hyaluronic acid gel placed into the groove that runs from the inner corner of the eye down towards the cheek, to soften the hollow and the shadow it creates.

Hyaluronic acid is a sugar molecule your body already makes to hold water in the skin. Filler versions are “cross-linked”, which means the molecules are bonded together so the gel holds its shape where it is placed rather than spreading out.

The groove itself has been described in the medical literature since the 1960s, when it was first called the nasojugal groove and later the “tear trough”. It deepens with age for several reasons at once. The EyeWiki overview from the American Academy of Ophthalmology lists fat loss and descent, weakening of the ligaments that tether the skin, and loss of bone in the upper cheek, alongside factors such as smoking and sun exposure. Some people simply inherit a deeper trough and notice it in their twenties.

When filler works, it is because it replaces lost volume under the hollow so that light no longer falls into a shadow. That is the whole mechanism. It does not change pigment, tighten skin or reduce fluid.

Who are tear trough fillers for?

Tear trough fillers suit people whose main concern is a true hollow under the eye, with reasonably good skin quality and very little puffiness or loose skin.

A widely cited treatment consensus from a panel of specialists scores candidates on muscle bulk, pigmentation, skin laxity, fat pad bulging and fluid retention. The lower the combined score, the better the candidate. Above a certain score, the panel does not recommend filler at all and suggests a surgical opinion instead.

In practice, the patients who tend to do well:

• Have a visible groove or hollow that makes them look tired even after a good night’s sleep.
• Have firm, reasonably thick under-eye skin that springs back when gently pinched.
• Have little or no puffiness, and their under-eyes look similar morning and evening.
• Have realistic expectations: a softer, more rested look, not a different face.

Worth knowing: a hollow tear trough is often linked to volume loss in the cheek below it. One clinical-practice paper describes an indirect approach that supports the cheek first in many patients, so less product needs to sit directly under the eye. The same authors stress that it is “much better to undercorrect rather than overcorrect” this area.

Who are tear trough fillers not for?

Tear trough fillers are not the right treatment if your main concern is puffy eye bags, crepey or loose skin, fluid that comes and goes, or dark circles caused by pigment or visible blood vessels.

This is the part of the consultation that matters most. Dark circles look similar to the eye but have different causes. A periorbital pigmentation review groups them into pigmented, vascular, structural and mixed types. Filler only helps the structural type, where a hollow casts a shadow. Brown pigment from genetics, sun or rubbing will still be there after filler. So will the blue-purple tone of veins showing through thin skin.

You are not a candidate for tear trough filler, or you need a different plan first, if:

• You have puffy bags. Bulging lower-lid fat is the opposite problem to a hollow. Adding volume next to it can make the whole area look puffier. Our eye bags page covers the options that suit this pattern.
• Your under-eyes swell. If your eyes look noticeably puffier in the morning or after salty food, filler can attract water and worsen it. The consensus panel lists under-eye oedema (fluid swelling) as something to address before any filler.
• Your skin is very thin or loose. Thin skin can show filler as a bluish tint, known as the Tyndall effect. Marked laxity usually needs a surgical opinion.
• You have long-lasting synthetic filler in the area already. The consensus treats existing non-dissolvable filler under the eye as an absolute reason not to inject.
• You are pregnant or breastfeeding, have an active cold sore, active acne or skin infection nearby, or certain autoimmune conditions. We do not inject filler in these situations.
• You are under 18. In England it is a criminal offence to give cosmetic filler to anyone under 18, even with a parent’s permission.

If pigment or texture is your main concern, our dark circles page sets out what tends to help each type.

Are tear trough fillers safe?

Tear trough fillers are generally well tolerated in qualified hands, but the under-eye is one of the most demanding areas of the face to inject, and both mild and serious complications are documented.

The common side effects are short-lived. In the consensus paper above, bruising affected around 10.7% of treated tear troughs and mild swelling around 11.6%, both usually settling within four to seven days. The Tyndall effect appeared in 2.6%, linked to filler placed too close to the surface.

The less familiar risks are delayed. A systematic review of 52 published cases of late tear trough complications found swelling was the most common (42.3%), followed by lumps or nodules (25.0%). On average these appeared 16.8 months after treatment, and discolouration appeared on average more than four years later. Filler can sit in the tissue for longer than many patients expect.

Technique is still debated. A review of 42 studies comparing needle and cannula injection found no significant difference in results or safety between the two, and noted that there is still no standardised, evidence-based method for this area. That is one more reason experience counts.

The most serious risk is a filler blocking a blood vessel. A world literature review identified 98 cases of vision changes after filler. Most involved the glabella (between the brows) and nose rather than the tear trough, and the review describes the risk as rare. But most cases of vision loss did not recover, which is why the injector’s knowledge of facial blood vessels is non-negotiable.

The safety net for hyaluronic acid filler is an enzyme called hyaluronidase, which breaks the gel down. It is used both for emergencies and for results a patient is unhappy with. At CoLaz, dissolving is available at every clinic when a patient needs it, and we discuss it openly at consultation.

How long do tear trough fillers last?

Tear trough fillers typically last 6 to 18 months, depending on the product, the amount used and how your body breaks it down.

Across all areas, the hyaluronic acid fillers we use at CoLaz typically last 6 to 18 months depending on product and area. EyeWiki puts hyaluronic acid in the tear trough at roughly 9 to 12 months. As the delayed-complications review shows, traces of filler can remain longer than the visible result, which is one reason we prefer small, conservative top-ups over large single treatments.

On “tear trough filler before and after” photos: be wary of images taken minutes after injection or with different lighting. The under-eye looks most even when lit straight on. A fair before and after is taken in the same light, at the same angle, after the area has settled at around two weeks.

What happens at a CoLaz tear trough consultation

Every tear trough treatment at CoLaz starts with a free consultation, and it is longer than most because the assessment is the treatment decision.

We take your medical history, medication and allergies, look at your under-eyes in different light, check for puffiness, test how your lower-lid skin springs back, and look at the cheek below. Then we tell you which type of under-eye concern you have. Often it is a mix.

Tear trough filler is an advanced treatment reserved for our doctor tier because of the anatomy involved. It is priced separately from other filler areas for the additional skill and time, and the full price for your specific plan is confirmed in writing at the free consultation before any session is booked. You take that plan away and decide. There is no day-one pressure to commit.

If you go ahead, you can expect topical numbing, possible bruising or swelling for 24 to 72 hours, and a settled look at around two weeks, when we review the result.

In my experience, the most common mistake with dark circles is treating the symptom without diagnosing the cause. Filler will not lift true pigmentation, and skin brighteners will not lift true hollowing. I have also seen patients come to us after being pressured into fillers they did not actually want. If a patient is not a good candidate for filler that day, we say so, and we have turned patients away for fillers because of active acne, an active cold sore or certain medications. Saying no protects the patient.

When filler is not the answer

If your under-eye concern is about skin quality rather than volume, there are gentler options that do not add bulk.

• Polynucleotide injections. Our Lumi Eyes treatment uses polynucleotides around the eyes to improve under-eye texture, hydration, fine lines and tone, from £180 per session. It is not given within four weeks of filler in the same area.
• Sunekos. A mix of hyaluronic acid and amino acids aimed at skin elasticity, from £250 for dark eye circles.
• Daily SPF and gentle skincare. Sun exposure aggravates under-eye pigment, so protection matters whichever treatment you choose.
• A surgical opinion. For marked bags or loose skin, a lower eyelid procedure (blepharoplasty) is often the more honest route, and specialists frequently combine it with tear trough correction.

Sometimes the best plan is a combination over several months: skin quality first, then a very small amount of filler if a hollow is still there.

How do you choose a safe tear trough injector?

Choose a medically qualified practitioner who assesses before they inject, uses small conservative amounts, and can dissolve filler on site if anything goes wrong.

Questions worth asking at any clinic:

1. Who will inject me, and what is their medical qualification?
2. How many tear trough treatments do they do, and how do they manage complications?
3. Is hyaluronidase kept on site?
4. What product is used, and how much will be placed under each eye?
5. Is there a review appointment at two weeks?

You can check practitioners against voluntary registers such as the JCCP and the Save Face accredited register, which assess training, insurance and premises standards. A clinic that is happy to answer every question above, and happy to tell you that filler is not right for you, is usually a clinic worth trusting.

Next step: book a free under-eye assessment

If you are unsure whether you have a hollow, puffiness, pigment or a mix, the simplest next step is to have it assessed. Our dermal fillers page explains how we approach filler across the face, and you can book a free consultation at any of our seven UK clinics by WhatsApp. We will tell you at the consultation whether tear trough filler suits you, and if it does not, what will.