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If You Need a More Definitive Option Than Under-Eye Filler for Hollowing

Inique Plastic Surgery · 아이니크 성형외과 공식블로그 · August 4, 2026

Is Under-Eye Hollowing Caused by a Lack of Fat? When people notice under-eye hollowing, many assume that the fat beneath the eyes has decreased. They may therefore conclude that fi...

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This page is an English translation of a Korean Naver Blog archive entry. For exact wording and source context, verify against the Korean archive original and the original Naver post.

Clinic: Inique Plastic Surgery

Original post date: August 4, 2026

Translated at: August 17, 2026 at 11:56 AM

Medical note: This translation does not guarantee medical accuracy or suitability for treatment decisions.

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Is Under-Eye Hollowing Caused by a Lack of Fat?

When people notice under-eye hollowing, many assume that the fat beneath the eyes has decreased. They may therefore conclude that filling the hollow area with volume will solve the problem. However, under-eye hollowing is not determined solely by the amount of fat. The ligaments that support the under-eye area, skin thickness, fat that has protruded forward, and the volume of the upper cheek can create differences in height that make the area look like a deeper groove than it actually is.

The Key Point of Today’s Topic

: Under-eye hollowing is often caused more by differences in height between the under-eye tissues than by a lack of fat.

What Needs to Be Checked

: Whether hollowing and bulging occur together, how the area changes when the face is expressionless and when smiling, skin laxity, and the height of the upper cheek

Approach to Correction

: Rather than filling only the hollow area, move protruding fat to the necessary position to create a smoother transition along the under-eye boundary.

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Why Does It Look Worse When You Are Tired?

There are times when under-eye hollowing may suddenly appear deeper after a poor night’s sleep. However, the amount of under-eye fat has not significantly decreased in a single day. When the area around the eyes becomes swollen or the skin looks darker due to fatigue and lack of sleep, the boundary of the tear trough that was already present may become more pronounced. In particular, when there is a difference in height between the bulging and hollow areas beneath the eyes, lighting from above can create shadows, making the groove look even deeper. Therefore, if under-eye hollowing continues to appear under certain lighting or from certain angles even after getting enough rest, it is worth checking for a structural tear trough rather than attributing it simply to fatigue.

  • The under-eye area looks darker when lit from above

  • A shadow remains even after covering the skin tone with concealer

  • A groove extends diagonally from the inner corner of the eye

  • The darkness becomes less noticeable when you tilt your head up or change the direction of the lighting

  • The area immediately below the bulging part of the under-eye looks hollow

Unlike pigment-type dark circles caused by darker skin coloration, this may be a shadow created by three-dimensional contours.

Why Can Under-Eye Hollowing Occur Even in Younger People?

Under-eye hollowing is not necessarily caused only by aging. Even people in their 20s and 30s may have deep-looking under-eyes if the bone beneath the eyes is naturally set farther inward, the upper-cheek volume is limited, or the boundaries of the tissues forming the tear trough are distinct. In addition, when the under-eye skin is thin, the color of blood vessels and muscles may show through, making the area look darker and deeper than the actual hollowing. If a parent or sibling has a similar under-eye shape, the influence of inherited bone structure and soft tissue may also be considered.

Therefore, rather than choosing a simple injection method solely because you are young, it is necessary to distinguish whether the under-eye fat is protruding, whether the skin is thin, and whether the upper cheek is also hollow.

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Wouldn’t It Be Enough to Fill Under-Eye Hollowing with Filler?

If the hollowing is mild, the skin has good elasticity, and there is little protrusion of under-eye fat, an injectable treatment may be one option. However, if the under-eye fat is noticeably bulging, swelling is significant every morning, or the skin is very thin, simply adding volume may make the area beneath the eyes look heavy or puffy.

Therefore, it is advisable to identify which type applies to you and create a plan accordingly.

  • Type with hollowing only

Check whether there is insufficient volume in the upper cheek and under-eye area.

  • Type with both bulging and hollowing

Consider fat repositioning using the protruding under-eye fat.

  • Type accompanied by skin laxity

Check whether correction of the skin and lower-eyelid supporting tissues is needed.

  • Type with frequent swelling and thin skin

Carefully determine whether simple volume injection is appropriate.

When moderate or greater tear-trough hollowing occurs together with fat protrusion, structural correction methods such as fat grafting, fat repositioning, or lower-eyelid surgery may be considered. The surgical method should vary according to the under-eye shape and skin elasticity.

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What Is Different About Ainique Encore Under-Eye Fat Repositioning?

Ainique’s Encore under-eye fat repositioning is not a method that simply treats the area as an empty space to be filled. It examines the bulging fat beneath the eyes together with the hollow tear trough below it, with the aim of preserving the existing fat that has protruded forward while moving it to the necessary position. Rather than removing protruding fat unconditionally to flatten the under-eye area, this method uses your own under-eye fat to reduce the higher areas and connect the lower areas.

Key Features of Encore Under-Eye Fat Repositioning

  • Preserve the existing under-eye fat as much as possible

  • Move protruding fat toward the tear-trough area

  • Adjust the difference in height between the bulging and hollow areas together

  • Smoothly refine the boundary extending from the under-eye area to the upper cheek

  • Reposition the fat individually according to its amount and the depth of the tear trough

  • Consider the burden of additional hollowing caused by excessive fat removal

Under-eye fat is tissue that protects the eyeball and maintains natural volume beneath the eyes. Therefore, simply removing all the fat because under-eye hollowing is present—or filling the hollow area with an excessive amount without consideration—may not be appropriate.

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Why Is UltraPulse Laser Used in Under-Eye Surgery?

The skin and tissues beneath the eyes are very thin and delicate, so it is important during surgery to make incisions and separate only the areas that are needed with precision. Ainique uses the Encore UltraPulse laser during Encore under-eye fat repositioning. UltraPulse is a type of CO2 laser that delivers high energy over a short period, with the aim of precisely incising or separating the necessary tissue while reducing the effects of heat spreading to surrounding areas.

In general, when laser energy remains in tissue for a long time, heat may spread to the surrounding areas. The UltraPulse method, however, is designed to deliver energy within short pulses to reduce unnecessary heat diffusion.

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Under-eye fat repositioning is not simply a procedure involving an incision; it requires the delicate process of separating and moving the fat, then evenly placing it along the hollow boundary. It is necessary to distinguish the required tissues precisely so that the existing fat can be preserved while securely creating the space needed for repositioning. The UltraPulse laser can be regarded as equipment used in this type of precise surgical process.

If you would like to learn more about the Encore under-eye fat repositioning method and surgical scope suited to your under-eye area, please check the details at Ainique through the channel link below.

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