You Asked for Under-eye Filler but Were Offered Another Treatment: 5 Things a Doctor Checks First

Hello, I am Dr. Lee Seung-hwan (이승환), director of Plan Me Clinic.

“Doctor, I came for under-eye filler. Why are you suggesting a different approach?”

This is something I occasionally hear in the consultation room.

If you came in thinking about filler because your under-eyes look dark and tired, it may feel surprising when I do not immediately recommend treatment.

Under-eye filler, however, is more than simply filling a dark-looking area.

Under-eye filler is a hyaluronic acid filler treatment used to soften hollows and shadows caused by insufficient volume beneath the eyes. If fat bulging, pigmentation, or skin laxity is the main cause, filler alone may not achieve the result you want.

That is why I begin by assessing why the under-eye area looks dark, before considering how much filler to use.

Today, I will explain the factors I pay particular attention to during an under-eye filler consultation.

Contents

1. What is checked first at an under-eye filler consultation?
2. How do we distinguish dark circles from under-eye hollowness?
3. Why another treatment may be recommended instead of under-eye filler
4. Why do the amount and depth of under-eye filler matter?
5. What to check when choosing an under-eye filler clinic
6. Frequently asked questions about under-eye filler
7. What is checked first at an under-eye filler consultation?

1.The first step is to identify the cause of the under-eye shadow.

A dark-looking under-eye area does not always mean there is a lack of volume.

Some people have a deep groove extending from the inner corner of the eye that creates a shadow. Others have under-eye fat that projects forward, making the area below it appear relatively hollow.

In other cases, the skin itself is darker, or blood vessels show through.

Expert recommendations on under-eye filler published in the Journal of Cosmetic Dermatology also describe assessing under-eye hollowness, fat bulging, skin laxity, pigmentation, and swelling together.

I likewise look beyond the under-eye area alone during a consultation.

I assess its contours from the front and side and observe how the surrounding tissues move when you smile or change expression.

I pay particular attention to whether your eyes tend to swell in the morning and whether you have had filler before.

Filler can replace missing volume, but it cannot address every cause of under-eye shadowing.

2. How do we distinguish dark circles from under-eye hollowness?

The causes of a dark-looking under-eye area can be considered in broad groups, including hollowness, fat bulging, pigmentation, and skin laxity.

Under-eye pattern	Main features	Suitability for under-eye filler
Hollowness	A groove extends downward from the inner corner of the eye	Volume replacement may be considered
Fat bulging	Fullness beneath the eye creates a shadow below it	Filler alone may have limitations
Pigmentation	The skin itself is brown or darker in color	Filler is unlikely to improve the pigment itself
Skin laxity	Fine lines and loose skin are present	Another approach may be needed depending on the skin
Swelling	Marked morning puffiness or recurrent under-eye swelling	The possibility that filler could worsen swelling needs consideration

Of course, real under-eye concerns do not always fit neatly into these categories.

It is quite common to have some hollowness, some fat bulging, and darker skin at the same time.

What matters is therefore not simply assigning a single label, but identifying which factor contributes most to the current under-eye shadow.

For example, if a lack of volume is the main issue, under-eye filler may be considered. If skin color is the main cause, however, the dark color may remain even after filler.

Understanding this distinction first can help when considering treatment options.

3. Why might another treatment be recommended instead of under-eye filler?

Prominent fat bulging, swelling, or skin laxity are common situations in which under-eye filler may not be suitable.

In particular, trying to fill the hollow beneath a prominent under-eye fat bulge too aggressively can make the entire area look fuller or swollen.

Hyaluronic acid filler also attracts water, so extra caution is needed for people who regularly experience under-eye swelling.

For these patients, it is important to assess the degree of fat bulging, skin elasticity, and the cause of swelling before recommending filler.

Depending on the condition, skin care or pigmentation treatment may be considered. If under-eye fat bulging is pronounced, an assessment of suitability for a related surgical treatment may also be suggested.

When I discuss a different approach, it does not mean that filler is inherently a poor treatment.

It means the change a patient hopes for may differ from what filler can actually improve.

If the aim is a brighter, natural-looking under-eye area, I believe that deciding not to inject filler can also be an important clinical decision.

4. Why are a conservative amount and appropriate depth important for under-eye filler?

The under-eye area has thin skin and complex surrounding anatomy.

The choice of filler therefore needs to be considered alongside the injection location, depth, amount, and existing tissue condition.

If filler is placed too superficially or distributed unevenly, a bluish appearance known as the Tyndall effect may occur.

An excessive amount may also lead to an uneven contour or persistent swelling.

I use Belotero Balance for under-eye treatments.

Belotero Balance is a hyaluronic acid filler. Studies of its physical properties have reported relatively low elasticity and viscosity and uniform integration within tissue.

These characteristics do not mean that every patient will have the same result, or that the product prevents the Tyndall effect or swelling.

I believe that choosing the appropriate amount and depth for the patient’s skin thickness and under-eye anatomy is just as important as choosing the product.

This is why I carefully consider the area that needs treatment rather than adding a large amount at once simply because it looks hollow.

5. What should I check when choosing an under-eye filler clinic?

When researching under-eye filler, some people compare only prices or product names.

However, suitability and risks can vary with each person’s under-eye anatomy.

During your consultation, it can help to ask about the following:

• Whether the clinician explains the differences between under-eye hollowness, fat bulging, and pigmentation
• Whether the filler product name and information on approval and safety for use in that area are explained
• Whether previous filler treatment and a tendency toward swelling are assessed
• Whether medications, medical conditions, and allergies are reviewed
• Whether the response to complications and follow-up care are explained

When appropriate, treatment to break down hyaluronic acid filler with hyaluronidase may be considered. However, not every problem can be easily reversed.

Rarely, filler entering a blood vessel can cause serious complications such as skin necrosis or vision damage.

It is therefore important to receive a full explanation of these risks and emergency response procedures before treatment.

6. Under-eye filler FAQ
   

Q1. Who may be suitable for under-eye filler?
It may be considered when a lack of volume creates a groove beneath the eyes and the resulting shadow is the main concern. If fat bulging, swelling, or skin laxity is also present, an individual clinical assessment is needed.

Q2. Will under-eye filler improve dark circles?

This depends on the cause. Shadows from hollowness may improve with volume replacement, but filler alone is unlikely to help much when pigmentation or visible blood vessels are the main cause.

Q3. How many cc of under-eye filler are usually needed?

There is no fixed amount that applies to everyone. The injection amount is determined by factors such as the depth of the hollow, skin thickness, differences between the two sides, and any existing filler. More filler does not necessarily lead to a better result.

Q4. Can bruising or swelling occur after under-eye filler?

Temporary bruising, swelling, tenderness, or redness may occur after treatment. However, severe pain, skin turning white or gray, blurred vision, or any change in eyesight requires immediate emergency medical care. Vision changes are an emergency and should not be delayed.

Q5. Can I have more under-eye filler if some previous filler remains?

This depends on the type of existing filler, its remaining location and amount, and whether swelling or nodules are present. A long period of time does not necessarily mean all the filler has been absorbed, so the current condition needs to be assessed before deciding on further treatment.

Q6. Can under-eye filler be dissolved if I do not like the result?

Treatment to break down hyaluronic acid filler with hyaluronidase may be considered. The response varies with the filler’s location and condition, and additional treatment may be needed. Not every side effect can be resolved with dissolving injections alone.

Closing thoughts: What matters most to me in an under-eye filler consultation

My first thought in an under-eye filler consultation is not which product to use or how much to inject.

I first consider whether filler is truly needed in the current under-eye area and how much of the concern it can realistically improve.

Even when concerns are described as dark circles, volume replacement may help some people, while others may need to consider another treatment first.

This is why I may not immediately recommend a procedure even when someone visits specifically for filler.

I consider that assessment an important part of care toward a good outcome.

If you would like to understand why your under-eyes look dark, it can help to have the structure and skin condition assessed before deciding on a procedure.

Dr. Lee Seung-hwan (이승환), Director of Plan Me Clinic

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Medical references

1. Anido J, et al. (2021). Recommendations for the treatment of tear trough deformity with cross-linked hyaluronic acid filler. Journal of Cosmetic Dermatology. https://pmc.ncbi.nlm.nih.gov/articles/PMC7818415/
2. Nikolis A, et al. (2022). Expert Recommendations on the Use of Hyaluronic Acid Filler for Tear Trough Rejuvenation. Journal of Drugs in Dermatology. https://pubmed.ncbi.nlm.nih.gov/35389598/
3. Sundaram H, et al. (2013). Biophysical characteristics of hyaluronic acid soft-tissue fillers and their relevance to aesthetic applications. Plastic and Reconstructive Surgery. https://pubmed.ncbi.nlm.nih.gov/24077013/
4. U.S. Food and Drug Administration (FDA). Dermal Fillers (Soft Tissue Fillers): Risks and Safety Information. https://www.fda.gov/medical-devices/aesthetic-cosmetic-devices/dermal-fillers-soft-tissue-fillers

This article provides general medical information about under-eye filler. Treatment suitability, effects, and side effects may vary with the individual and should be discussed and determined through a clinical assessment.