Eye bags, dark circles or tear trough?
the three-way self-check

How do I tell eye bags, dark circles and a tear trough hollow apart?

Three quick tests do most of the work, and none needs equipment. The first is the 8 a.m. test: if the puffiness is still there after a full night's sleep, it is structural rather than fluid. The second is the stretch test: stretch the skin gently sideways and watch what the darkness does. The third is the light test: look straight at a mirror in frontal light, then tilt your face up under a ceiling light.

Because no photographs are shown here, it helps to describe each pattern. A true bag is a soft bulge in the lower lid that enlarges when you look upward and looks much the same at eight in the morning and at night. A tear trough hollow is a groove along the inner lower lid, running diagonally down and out from the inner corner of the eye, and under overhead light it can read as a bag because the shadow it casts mimics fullness. Dark circles are a change of colour rather than of shape: brown, blue-violet or shadow-grey.

These are screening observations, not a diagnosis. Most people over forty carry a mild true bag plus a deepening trough, which exaggerates both, and pigment or visible vessels often ride along. The table below sets out what each pattern looks like and what does and does not help.

What is an eye bag, and is it fat or fluid?

A true eye bag is orbital fat. The eyeball sits on cushions of fat held behind a thin fibrous wall called the orbital septum, and with age the septum slackens and the fat pushes forward into the lower lid as a persistent bulge. It is anatomy, not tiredness: it is there at 8 a.m. after a full night's sleep, it tends to enlarge on looking upward, and no cream, roller or cucumber reaches behind the septum.

Fluid puffiness is the other common kind. It peaks on waking, eases through the day and is worse after salt, alcohol or crying, so it is the one version where sleep position, salt, alcohol and allergy control are the treatment. A third look-alike, puffiness on the upper cheek rather than the lid, is malar mounds or festoons: fluid-prone tissue at the lid-cheek junction that is stubborn and is assessed separately. The causes of eye bags page and the eye bags, hollows and shadows guide cover the anatomy in more depth.

“Dark circles are not one condition — brown, blue and shadow are three different problems, and the eye cream aisle treats at most one of them.”

Dr Sin YongOn why type comes before treatment

Tear trough filler, under-eye filler, eye bag filler: same thing?

Tear trough filler, under-eye filler and eye bag filler are three names people in Singapore use for what they hope is one treatment, and two of the three describe the same thing. Tear trough filler and under-eye filler both mean a small amount of soft hyaluronic acid placed deep on the bone beneath a genuine hollow between the lower lid and the cheek. Eye bag filler is different: an eye bag is fat that has pushed forward, and filler adds volume, so the phrase describes a wish rather than a treatment. The table sorts the spellings.

What people search	What it usually means	What it is in clinic	Page
Tear trough filler, filler under eyes, dermal fillers under eyes	The hollow or shadow between the lower lid and the cheek	The same treatment: soft, low-G′ hyaluronic acid on the bone beneath a true hollow, in very small amounts, after the hollow has been confirmed by examination	Tear trough filler
Under-eye filler, under eye fillers	Tiredness, darkness or a dip under the eye	Identical to tear trough filler when the finding is a hollow; a different plan when the finding is pigment, thin skin or fluid, none of which is a shortage of volume	Types of dark circles
Eye bag filler, eye bag fillers	Puffiness or a bulge under the eye	Not a treatment for the bag itself. A bag is herniated fat; adding gel beside it can make it more visible. Filler is sometimes placed in the groove below a small bag to soften the step, but the bag is assessed for removal or left alone	Eye bag removal

The confusion is understandable, because a hollow, a bag and a shadow all read as "tired" in the mirror, and a single face can carry all three. A hollow is a groove along the bony rim of the eye socket that is there from morning to evening. A bag is a soft bulge above that groove that is also constant. Fluid puffiness is worse on waking and eases through the day, and pigment is colour in the skin that stays when the skin is stretched. Only the first of these is a shortage of volume, and only a shortage of volume is a filler case.

That is why the same enquiry, sent under any of the three names, leads to the same first step: an in-person examination with the head tilted back and the gaze upward, gentle pressure on the closed upper lid to reveal any fat prolapse, and the skin stretched to separate pigment from shadow. Earlier filler is imaged with ultrasound before anything is added. The names people use do not change the plan; the findings do.

What are dark circles, and which type do I have?

Dark circles are one complaint hiding three diagnoses. Brown circles are excess melanin in the lid skin, driven by genetics, rubbing, eczema and sun, and the colour moves with the skin when it is stretched. Blue-violet circles are blood vessels showing through some of the thinnest skin on the body; they persist on stretch and look worse when tired, although fatigue does not cause them alone. Shadow circles are cast by the hollow of the tear trough and the descent of the mid-cheek, and they shallow on stretch and deepen under overhead light.

Treating the wrong type is why so many eye creams, and even procedures, disappoint. Brightening topicals and pigment lasers act on melanin, which does nothing for a shadow. Filler rebuilds a hollow and, on pigmented skin, can add puffiness. Vessels call for an approach aimed at skin thickness, not bleaching. The dark eye circle types guide explains each mechanism, and the table sets out six common patterns.

What is a tear trough hollow, and when is filler the wrong answer?

A tear trough hollow is a concavity: a groove along the inner lower lid, where the lid meets the cheek, that deepens with age as volume is lost at the lid-cheek junction. It casts a shadow that reads as tiredness and, under overhead light, as a bag. Soft hyaluronic acid placed deep, usually with a fine cannula, can restore the deficit when the under-eye is a true hollow with lower-lid skin of reasonable thickness.

Filler is the wrong answer where the under-eye is a convexity rather than a concavity. Placed over a true fat bag it adds weight and makes the bulge look larger. It is also a poor fit for fluid-prone puffiness, festoons and markedly lax lower-lid skin, and it does not lighten pigment or hide visible vessels. Over-correction creates a shelf or puffiness, which is why small volumes are placed deep and judged at review. The tear trough refinement page sets out who it suits.

The periorbital region has a dense network of vessels and little tolerance for error, and vascular occlusion, though rare, is serious. Hyaluronic acid is chosen partly because it can be dissolved with hyaluronidase. Skin that turns white, grey, blue or mottled, severe or increasing pain, or any change in vision after filler needs urgent attention, and a vision change means going straight to a hospital emergency department. Filler placed elsewhere can be assessed through filler correction, and the complication care page lists the signs.

Tear trough vs dark circles: what is the difference?

The tear trough is a structure; dark circles are an appearance. The tear trough is the groove that runs from the inner corner of the eye along the bony rim of the socket, held down by the tear trough ligament. Dark circles describe any darkening under the eye, whatever produces it.

The two overlap only where the darkness is a shadow cast by that groove. When the tear trough deepens, light from above misses it and the groove reads as a dark line, and tear trough filler can make the step shallower. When the darkness is pigment in the skin, vessels showing through thin skin, or a bag sitting above the groove, the tear trough itself may be unremarkable and filler has nothing to correct.

That is why the same complaint, 'my dark circles', can lead to filler for one person, pico laser for another and a referral for eyelid surgery for a third. A search for tear trough treatment presumes the cause; the examination confirms it.

Why do most people have a mixture, and what order helps?

Most under-eye concerns are mixed, so a good plan names each component and addresses it in turn. A common combination after forty is a mild true bag with a deepening trough, which exaggerate one another, plus brown or vascular colour from genetics and thin skin. Treating a trough can remove the shadow frame that makes a mild bag look larger, whereas a bag that is large and constant remains a structural problem.

A sensible order follows whichever component dominates: stopping rubbing and protecting the skin from sun for pigment, skin-quality treatment for thin skin where vessels show, volume restoration for a true trough, and referral where fat prolapse is substantial. One treatment applied to the whole under-eye tends to disappoint, because the components do not share an answer.

Substantial fat prolapse is corrected by lower eyelid surgery, which Dr Sin Yong does not perform; those cases are referred to a plastic surgery or oculoplastic specialist. A non-surgical assessment can first establish whether herniated fat is actually the cause, because if the problem is a hollow, fluid or laxity, surgery to remove fat is not the answer. The eye bag removal page sets out how that judgement is made.

What does not help, and when should you see a doctor?

Several popular habits address none of these. More sleep helps fluid puffiness but not a structural shadow or a fat bag. Caffeine rollers constrict vessels for minutes and change no anatomy. Eye creams cannot reposition fat behind the septum, and bleaching creams do nothing for a vascular circle. Tape and lifting patches release their hold when the adhesive is removed. Rubbing the eyes is itself a documented driver of under-eye pigment, particularly in Asian skin.

See a doctor for swelling that is new, one-sided or rapidly worsening; for puffiness with redness, pain, itching or any change in vision; and for persistent puffiness with swelling elsewhere or unexplained tiredness, which may need a general medical check. A bulge that is constant and enlarging deserves assessment, and so does darkness that has not changed despite good sleep, sun protection and gentle care.

Before a consultation, note how the area looks at 8 a.m. and at night, bring photographs of your eyes from earlier years, and tell the doctor about allergies or hay fever, any eye condition, blood-thinning medicines and any earlier filler near the eyes, with the product name if you have it. A plan is made from examination, and it may be that waiting, or treating something other than what you came in asking about, is the honest advice.