The Tear Trough, Explained: Why Not Every Hollow Needs Filler
Under-eye hollowing is one of the most requested treatments and one of the easiest to get wrong, because the visible hollow often has more than one cause.
· 6 min
The tear trough — the groove running from the inner corner of the eye along the lower lid — is one of the most requested areas of facial treatment, and one where a single default solution, filler, is applied more often than the underlying cause actually warrants.
Three different causes, one appearance
A visible hollow under the eye can result from a genuine deficit of fat and support in that specific area, from a prominent tear trough ligament casting a shadow regardless of volume, or from puffiness just below the hollow that exaggerates the contrast by comparison. Two people can present with what looks like the same hollow, and require entirely different treatment because the mechanism differs. This is closely related to the broader distinction between under-eye bags and under-eye hollowing, two mechanically opposite processes often confused with one another.
Filler addresses the first cause reasonably well. It does very little for the second, and can actively worsen the third by adding volume beside a puffy area rather than reducing the puffiness itself.
Why tear trough filler goes wrong
The under-eye area has thin skin, a limited blood supply, and a tendency to retain fluid — which makes it more prone than most facial regions to visible complications from filler: a bluish discolouration (the Tyndall effect), puffiness that worsens over the following day, and lumps that are visible under specific lighting long after the treatment.
The tear trough punishes imprecision more than almost any other area of the face — which is exactly why it deserves more diagnosis, not less.
A more careful diagnostic approach
- Assessing the tear trough both at rest and while smiling, since the muscle movement involved in smiling changes how the hollow presents
- Distinguishing genuine volume loss from a prominent ligament or ongoing puffiness before recommending any treatment
- Considering skin quality and pigmentation separately from structural hollowing, since discolouration alone will not respond to filler
- Treating conservatively in this area specifically, given how visible even minor complications become
For many people, the most honest recommendation is a smaller, more conservative treatment than requested, or in some cases no filler at all — with the underlying cause addressed through a different route entirely. The same conservative principle applies to the temple, an adjacent and similarly overlooked area of structural loss.
Frequently Asked Questions
Why does under-eye filler sometimes look worse a year later?
Hyaluronic acid filler can attract water over time, particularly in the thin, fluid-prone tissue of the under-eye area, which can produce a puffier appearance months after the initial result looked appropriate.
Is there a non-filler option for tear trough hollowing?
Depending on the cause, options can include addressing the ligament itself, treating pigmentation or skin quality directly, or in select cases a surgical approach — the right option depends entirely on which underlying cause is actually present.
How do I know if my under-eye hollow is a good candidate for filler?
A hollow driven primarily by genuine volume loss, without significant puffiness or ligament prominence, tends to respond most predictably and safely to a conservative filler approach.
Can tear trough filler be reversed if the result isn't right?
Hyaluronic acid filler can be dissolved, which is one reason it remains the more commonly used option in this area despite its risks — but dissolving is a corrective step, not a substitute for accurate diagnosis beforehand.
Clinical Perspective
By Dr. Gan Lee Ping
The tear trough is an area where I ask patients to slow down more than almost anywhere else on the face, because the same-looking hollow can come from three genuinely different causes — true volume loss, a prominent ligament casting a shadow, or puffiness that exaggerates the contrast beside it. Filler is the right answer to exactly one of those, and can make the other two look worse, not better.
This is also one of the least forgiving areas on the face to get wrong. The skin is thin, the blood supply limited, and complications — a bluish discolouration, morning puffiness, small lumps under certain light — are more visible here than almost anywhere else. So I treat it conservatively by default: assessing at rest and while smiling, distinguishing the cause before recommending anything, and being comfortable telling a patient that a smaller treatment, or none at all, is the more honest recommendation for what I'm actually seeing.
Selected References
1. Haddock NT, Saadeh PB, Boutros S, Thorne CH. The tear trough and lid/cheek junction: anatomy and implications for surgical correction. Plast Reconstr Surg. 2009;123(4):1332-1340.
2. Douse-Dean T, Jacob CI. Fast and easy treatment for reduction of the Tyndall effect secondary to cosmetic use of hyaluronic acid. J Drugs Dermatol. 2008;7(3):281-283.
3. Rohrich RJ, Pessa JE. The fat compartments of the face: anatomy and clinical implications for cosmetic surgery. Plast Reconstr Surg. 2007;119(7):2219-2227.
About Dr. Gan Lee Ping
Dr. Gan Lee Ping is a Singapore aesthetic doctor with a clinical interest in facial anatomy, evidence-based aesthetic medicine, and natural-looking outcomes. Her educational articles focus on helping readers understand the anatomy, ageing processes and evidence behind aesthetic medicine so they can make informed decisions.
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