
Hello.
I am Dr. Kim Dong-young, Director of Cleor Clinic Hongdae Branch.
Have you ever been told that you look tired by someone you haven't seen in a while?
Even if you were feeling fine that day, hearing such a comment can make you stare at your face in the mirror for a long time once you get home.
You may have also tried drawing on aegyo-sal (under-eye fat) while applying makeup.
It might look decent when you draw it, but often the lines clump together or look misaligned when you smile, leading you to wipe it off.
The reason is simple. Aegyo-sal is not a drawn-on line, but a shape created when the muscle surrounding the eye rises plumply when you smile.
It is difficult for a static line to follow a dynamic volume.
Today, I will explain in order how aegyo-sal is structured, what kind of procedure Hongdae aegyo-sal filler is, and why we use specific formulations and carefully determine the depth and amount for this area.
What is Hongdae aegyo-sal filler?
👉 Hongdae aegyo-sal filler is a procedure that adds volume to the narrow band just below the eyelid to enhance the plump shape that appears when you smile.
First, there is a distinction worth making.
Aegyo-sal, under-eye hollowness, and dark circles are often grouped together, but their locations and characteristics are different.
Aegyo-sal is a narrow, band-shaped volume just below the eyelid.
Under-eye hollowness is closer to the groove that forms along the lower eye socket bone, further down.

Dark circles is a general term for a dark appearance caused by a mix of pigmentation, visible blood vessels, and shadows.
Therefore, Hongdae aegyo-sal filler is not a concept of filling the entire under-eye area.
It is closer to enhancing only the narrow area that needs to rise, and if there is a groove below, we determine the scope separately.
This is because even within the same under-eye area, the depth of placement differs.
How is aegyo-sal created?
👉 Aegyo-sal is a shape that rises plumply when the part of the muscle surrounding the eye, which passes just below the eyelid edge, contracts during a smile.
Around the eyes, there is the orbicularis oculi muscle that circles the eye.
This muscle is divided into several parts depending on the location, and the part closest to the eyelid edge is related to aegyo-sal.
When you smile, this part contracts, its thickness increases slightly, and the thin skin covering it is pushed up together.
This is why it is not very visible when expressionless but becomes prominent when smiling.
The thickness of this muscle and the degree to which it rises when contracted vary from person to person.
If the muscle is thin or the range of elevation is small, the under-eye area may remain flat even when smiling, which can make your impression look sharp.
Hongdae aegyo-sal filler is a method of adding a very small amount to this insufficient thickness to enhance the shape revealed when smiling.
Therefore, this procedure does not replace the movement of the muscle, but rather adds volume on top of the existing movement.
The condition that it must follow the movement becomes the standard for choosing the formulation and depth.
It is also good to know the conditions of this area.
The skin under the eyelid is among the thinnest on the body and has almost no subcutaneous fat.
This means that the material placed underneath is easily visible through the surface.
Strengths of Hongdae aegyo-sal filler
👉 The greatest strength of Hongdae aegyo-sal filler lies in adjusting the formulation, depth, and amount according to the conditions of thin skin and moving muscles.
First, we choose the physical properties suitable for the area.
Not all hyaluronic acid products have the same properties.
Depending on how tightly the molecules are linked, there are formulations that support and maintain shape firmly, and others that spread well and settle softly.
One of the indicators of this difference is elasticity.
Think of it as the force that tries to return to its original shape when pressed.
Formulations with high elasticity are used in areas that need to support structure in deep layers, such as the chin tip or temples.
However, if the same formulation is used for the aegyo-sal area, the contour can easily show through the thin skin and feel hard to the touch.
Therefore, for Hongdae aegyo-sal filler, we choose a formulation with low elasticity that spreads softly and place it in small amounts in the shallow layers.
The same reason applies to the need for properties that follow movement, as the muscle moves every time you smile.
Second, we consider the property of attracting moisture.
Hyaluronic acid has the property of attracting and retaining surrounding water.
While this is why it is known as an ingredient that helps with skin hydration, it is known that in areas prone to swelling like under the eyes, a larger amount can lead to prolonged puffiness.

This is another reason why we choose a method of shaping with a small amount.
Third, we carefully determine the depth and amount.
If the material is placed in a single lump in a shallow layer, blue light with a shorter wavelength among visible light can scatter more, making the area look bluish.
This is a property called the Tyndall effect, and it is a particular concern in the under-eye area where the skin is thin.
Therefore, we do not concentrate the amount in one spot but distribute it in small amounts across several points, and we also ensure the depth is not too close to the surface.
The fact that this is an area where the impression changes with very small differences, rather than an area that requires a large amount, actually makes this approach possible.
Fourth, there is room for reversal.
Hyaluronic acid products are known to be able to induce decomposition using an enzyme called hyaluronidase.
In areas like under the eyes where even minute changes in height can significantly alter one's impression, this provides flexibility in judgment.
Instead of filling it all at once and waiting, we distribute it in small amounts and it is also the basis for being able to manage the procedure by discussing the next steps while observing the state after the area has stabilized.
Working principle of Hongdae aegyo-sal filler
👉 The principle of Hongdae aegyo-sal filler is to place a soft formulation in small amounts in shallow layers to create a narrow band that rises when smiling.
First, we determine the layer to be placed.
If it goes too deep, the shape will not show on the surface and the desired band will not be formed, and if it is too shallow, it is easy to see through.
Finding the layer between these two points is the first step, and it is determined differently for each person depending on skin thickness and the degree to which the muscle rises when smiling.
Next is distribution.
Since it is a task of creating a narrow band shape, we do not fill the amount in one spot but distribute it across several points and observe the shape.
Since aegyo-sal is a shape that is revealed when smiling, not when still, we determine the position after checking the line where the muscle actually rises when smiling, rather than just looking at a neutral expression.
Checking the left and right sides is also included in this step.
A person's face is not perfectly symmetrical, and the height at which the muscle rises when smiling also differs slightly on both sides.
This is why we adjust the distribution based on the differences between the two sides rather than injecting the same amount equally.
Finally, we consider the changes over time.
Hyaluronic acid is in the same family as substances that naturally exist in the body, so it gradually decomposes over time.
This is why it is managed as a procedure that is supplemented at intervals while observing the state, rather than an item that is finished in one go.
Who is Hongdae aegyo-sal filler suitable for?
Those who feel that no volume is created under their eyes even when smiling
Those who draw on aegyo-sal with makeup but find it awkward depending on their expression
Those who are often told they look tired because of shadows under their eyes
Those who want to soften their impression because their eye shape looks somewhat sharp
Those who want subtle adjustments rather than major changes
Cases that require prior confirmation during consultation
👉 Depending on the condition under the eyes, there are cases where it is better to look at other directions before Hongdae aegyo-sal filler.
If there is under-eye fat bulging forward, adding volume on top of it can make the bulge look more prominent.
If you are prone to puffiness under your eyes every morning, we take a conservative approach to the amount because the moisture-attracting property can make the swelling more noticeable.
If the reason for dark under-eyes is mainly pigmentation, the direction of treating the color may come first rather than volume.
In such cases, we do not just look at the aegyo-sal area but look at the entire under-eye structure together before deciding on the order.
Types of Hongdae fillers
👉 The properties of the formulation used for fillers vary depending on the location and depth.
Since which formulation is suitable for which area depends on skin thickness and the degree of movement, we determine the direction after checking during the consultation.
Side effects of Hongdae aegyo-sal filler and things to know in advance

👉 Most of the things to know in advance about Hongdae aegyo-sal filler stem from the characteristics of the area being thin-skinned and vascular.
⚠️ Precautions before and after Hongdae aegyo-sal filler procedure
❓ Frequently Asked Questions (FAQ)
Q. Does Hongdae aegyo-sal filler use the same product as fillers for other areas?
A. Even if they are in the same hyaluronic acid family, their properties are different.
While firm formulations that support structure are used in areas that support structure in deep layers, for the aegyo-sal area where the skin is thin and there is almost no subcutaneous fat, we choose a formulation that spreads well and settles softly and place it in shallow layers.
Q. Does Hongdae aegyo-sal filler make it look plump even when expressionless?
A. Since aegyo-sal is a shape that is originally revealed when smiling, we determine the position based on a smiling expression.
The goal is to adjust the amount so that it looks subtle when expressionless and rises naturally when smiling.
Q. Can it look bluish after Hongdae aegyo-sal filler?
A. If the material is concentrated in a shallow layer, it can look that way as light scatters.
This is called the Tyndall effect, and to avoid this, we determine the depth and distribute it in small amounts across several points.
Q. Won't Hongdae aegyo-sal filler look obvious?
A. That impression is easy to create when you concentrate the amount in one spot.
Since aegyo-sal is an area where the impression changes with very small differences, the method of distributing it and checking the smiling expression tends to leave it less noticeable.
Q. Are Hongdae aegyo-sal filler and under-eye hollowness filler different?
A. Aegyo-sal is a narrow band just below the eyelid, and under-eye hollowness is a groove that forms along the lower bone rim further down.
Because the location and depth of placement are different, we divide the scope during the consultation.
Q. Can I get Hongdae aegyo-sal filler if I have bulging under-eye fat?
A. If the fat is bulging forward, adding volume on top of it can make the bulge look more prominent.
It is recommended to check the entire under-eye structure first before deciding on the direction.
Q. Does Hongdae aegyo-sal filler lighten dark circles?
A. Dark circles are a state where pigmentation, visible blood vessels, and shadows are mixed, so there is not just one cause.
If it looked dark because of shadows, the impression may look different, but if pigmentation is the main cause, the direction will be different.
Q. Can I reverse Hongdae aegyo-sal filler if I don't like it?
A. Hyaluronic acid products are known to be able to induce decomposition using hyaluronidase.
However, since the judgment varies depending on the condition, confirmation during the consultation is necessary.
Hongdae aegyo-sal filler is not a task of filling the under-eye area, but a process of selecting and enhancing only the narrow area that should rise when smiling.
Since aegyo-sal is a shape created when the muscle passing near the eyelid rises when smiling, we choose a formulation that spreads softly to follow that movement and place it in small amounts by adjusting the depth so that light does not scatter and show through.
The reason for taking a conservative approach to the amount by considering the moisture-attracting property is the same.
Because there is room for reversal with hyaluronidase, it is possible to manage the procedure by distributing it rather than filling it all at once and observing the state.
Since the skin thickness, the degree of muscle elevation, and the condition of under-eye fat and the lower groove vary from person to person, the layer and amount are not fixed, so we will check which direction is suitable for you in person during the consultation.
Cleor Clinic Hongdae Branch also operates a filler line including chin tip filler, temple filler, and front cheek filler.
If you have felt that your under-eye area is empty when you smile, please feel free to have a conversation with us.
※ This content is for general information purposes, and changes that appear may vary depending on the individual.
Please determine the exact diagnosis and whether to proceed with the procedure through consultation with a specialist.
이런 경우는 애교살 자리만 보지 않고 눈 밑 전체의 구조를 함께 본 뒤 순서를 정합니다.
홍대 필러 종류
👉 필러는 놓이는 자리와 깊이에 따라 쓰이는 제형의 성질이 달라집니다.

어느 자리에 어떤 제형이 어울리는지는 피부 두께와 움직임의 정도에 따라 달라지므로
진료에서 먼저 확인한 뒤 방향을 잡습니다.
홍대 애교필러 부작용과 미리 알아두실 점
👉 홍대 애교필러에서 미리 알아두실 점은 피부가 얇고 혈관이 많은 자리라는 특성에서 비롯되는 반응이 대부분입니다.

⚠️ 홍대 애교필러 시술 전후 주의사항

❓ 자주 묻는 질문 (FAQ)
Q. 홍대 애교필러는 다른 부위 필러와 같은 제품을 쓰나요?
A. 같은 히알루론산 계열이어도 성질이 다릅니다.
깊은 층에서 구조를 받치는 자리에는 단단하게 버티는 제형이 쓰이지만,
피부가 얇고 피하지방이 거의 없는 애교살 자리에는
잘 퍼지고 부드럽게 자리 잡는 제형을 골라 얕은 층에 둡니다.
Q. 홍대 애교필러를 하면 무표정일 때도 도톰해 보이나요?
A. 애교살은 원래 웃을 때 드러나는 모양이라,
웃는 표정을 기준으로 자리를 잡습니다.
무표정일 때는 은은하게, 웃을 때 자연스럽게 올라오도록
양을 조절하는 것을 목표로 합니다.
Q. 홍대 애교필러 후 푸르스름하게 비쳐 보일 수 있나요?
A. 얕은 층에 물질이 몰리면 빛이 흩어지면서 그렇게 보일 수 있습니다.
틴들 현상이라고 부르며,
이를 피하려고 깊이를 잡고 여러 지점에 소량씩 나누어 배분합니다.
Q. 홍대 애교필러를 하면 티 나 보이지 않을까요?
A. 한 자리에 양을 몰아 채울 때 그런 인상이 생기기 쉽습니다.
애교살은 아주 적은 차이로도 인상이 바뀌는 자리라,
나누어 두고 웃는 표정을 확인하며 배분하는 방식이 덜 도드라지게 남는 편입니다.
Q. 홍대 애교필러와 눈 밑 꺼짐 필러는 다른 건가요?
A. 애교살은 눈꺼풀 바로 아래 좁은 띠이고,
눈 밑 꺼짐은 그보다 아래쪽 뼈 테두리를 따라 생기는 골입니다.
자리와 놓이는 깊이가 달라 진료에서 범위를 나누어 봅니다.
Q. 눈 밑 지방이 볼록한데 홍대 애교필러를 해도 되나요?
A. 지방이 앞으로 나와 있는 경우 그 위에 볼륨을 더하면
불룩함이 더 도드라져 보일 수 있습니다.
눈 밑 전체 구조를 먼저 확인한 뒤 방향을 정하는 것이 좋습니다.
Q. 홍대 애교필러를 하면 다크서클도 옅어지나요?
A. 다크서클은 색소와 혈관 비침, 그늘이 뒤섞인 상태라 원인이 하나가 아닙니다.
그늘 때문에 어두워 보이던 경우라면 인상이 달라 보이기도 하지만,
색소가 주된 원인이라면 방향이 달라집니다.
Q. 홍대 애교필러는 마음에 들지 않으면 되돌릴 수 있나요?
A. 히알루론산 제제는 히알루로니다제로 분해를 유도할 수 있다고 알려져 있습니다.
다만 상태에 따라 판단이 달라지므로 진료에서 확인이 필요합니다.

홍대 애교필러는 눈 밑을 채우는 작업이 아니라
웃을 때 올라와야 할 좁은 자리만 골라 살리는 과정입니다.
애교살은 눈꺼풀 가까이를 지나는 근육이 웃을 때 솟아오르며 만들어지는 모양이라,
그 움직임을 따라갈 수 있도록 부드럽게 퍼지는 제형을 고르고
빛이 흩어져 비쳐 보이지 않도록 깊이를 잡아 소량씩 나누어 둡니다.
수분을 끌어당기는 성질까지 감안해 양을 보수적으로 잡는 것도 같은 이유입니다.
히알루로니다제로 되돌릴 여지가 남아 있어,
한 번에 몰아 채우지 않고 나누어 배분하며 상태를 보는 운용이 가능합니다.
피부 두께와 근육이 올라오는 정도, 눈 밑 지방과 아래쪽 골의 상태가 사람마다 달라
놓이는 층과 양이 하나로 정해지지 않으므로,
어느 방향이 적합한지는 상담 시 직접 확인해 드립니다.
클레오르의원 홍대점에서는 턱끝필러와 관자필러,
앞볼필러를 포함한 필러 라인을 함께 운영하고 있습니다.
웃을 때 눈 밑이 허전하게 느껴지셨다면, 편하게 한 번 이야기 나눠 보셔도 좋겠습니다.
※ 본 내용은 일반적인 정보 제공을 위한 글이며, 개인에 따라 나타나는 변화는 달라질 수 있습니다.
정확한 진단과 시술 여부는 전문의 상담을 통해 판단하시기 바랍니다.
