Since the 2000s, beauty trends emphasizing eye-smile expressions and a youthful appearance have spread,
and aegyosal filler procedures that naturally create fuller under-eye aegyosal became very popular.
Because it was a relatively simple procedure that could make the face look softer and younger,
many people chose it without much hesitation.
Aegyosal is originally a structure that naturally becomes more prominent when smiling due to the movement of the muscles under the eyes.
In contrast, aegyosal formed with filler stays constantly swollen regardless of facial expression, whether smiling or not.
As a result, even a small amount can make the area under the eyes look unnaturally protruded,
or the impression may instead feel awkward and heavy.
![[Rari Plastic Surgery] What Is the Problem with Non-Dissolving Aegyosal Fillers? (a.k.a. Foreign Substances) image 1](https://pub-9f2bb3498faf4d1d8714b41df24753e3.r2.dev/content/clinics/archive/tgzuf37zyh/naver_blog/laree2345/assets/by_hash/4831e63aec222a3b1e7f14d1f2c18c7c84363bed32bfd3dd2c04e0e12c72cad2.jpg)
![[Rari Plastic Surgery] What Is the Problem with Non-Dissolving Aegyosal Fillers? (a.k.a. Foreign Substances) image 2](https://pub-9f2bb3498faf4d1d8714b41df24753e3.r2.dev/content/clinics/archive/tgzuf37zyh/naver_blog/laree2345/assets/by_hash/2a257bb4fe641b8f2b38d623cf89dc97394808e60df873a3c8ff6d5907fda346.jpg)
Recently, the trend has been to use hyaluronic acid fillers, which are absorbed by the body over time,
but in the past, so-called “permanent fillers (foreign substances),” such as non-dissolving collagen fillers or calcium fillers, were often used.
These fillers (foreign substances) are not broken down in the body and can remain as they are over time, causing various problems.
In fact, our clinic consistently sees patients who visit for removal surgery because they feel discomfort from these non-dissolving fillers or want to improve their appearance.
In particular, if the filler is left in place for a long time, the skin and muscle tissue in the aegyosal area can adhere to the filler (foreign substance),
causing the under-eye aegyosal to look excessively swollen or become distorted into an uneven shape, which often ruins a natural impression.
![[Rari Plastic Surgery] What Is the Problem with Non-Dissolving Aegyosal Fillers? (a.k.a. Foreign Substances) image 3](https://pub-9f2bb3498faf4d1d8714b41df24753e3.r2.dev/content/clinics/archive/tgzuf37zyh/naver_blog/laree2345/assets/by_hash/19b94ddeb4a6e31427a4db4d824ce2389a174a95e2baaeaf060cf5b44e5300a9.png)
Many people think of filler as “something injected with a needle,” meaning a kind of “liquid(?),”
so they assume removal would be simple—just make a hole and squeeze it out.
But in reality, that is not the case.
Especially with non-dissolving fillers, they become firmly set as they bind with surrounding tissue over time and take on a shape,
so they cannot be removed simply by applying pressure.
![[Rari Plastic Surgery] What Is the Problem with Non-Dissolving Aegyosal Fillers? (a.k.a. Foreign Substances) image 4](https://pub-9f2bb3498faf4d1d8714b41df24753e3.r2.dev/content/clinics/archive/tgzuf37zyh/naver_blog/laree2345/assets/by_hash/c98bec7e612216f9663cb07f608cc2a8a60de609daa250884681a0f204490f0b.jpg)
7 days after under-eye foreign substance removal surgery
Therefore, in such cases, an incision must be made along the lower lash line,
and the filler must be individually separated and removed while directly checking its position and condition.
Since the area under the eyes is made up of very thin and sensitive tissue,
the process of delicately removing foreign substances lodged between the muscles
is a highly difficult surgery that requires a high level of skill.
After surgery, an incision line similar to that of lower blepharoplasty remains under the eyes,
but because it mostly aligns with the lower lash line, it gradually fades over time and recovers naturally.
When looking at cases of excessive aegyosal filler
![[Rari Plastic Surgery] What Is the Problem with Non-Dissolving Aegyosal Fillers? (a.k.a. Foreign Substances) image 5](https://pub-9f2bb3498faf4d1d8714b41df24753e3.r2.dev/content/clinics/archive/tgzuf37zyh/naver_blog/laree2345/assets/by_hash/cb9fd16a53aa779a14e4a8cc9b994112340cc47e5919687f907fa40ca56444ac.jpg)
In reality, the under-eye aegyosal looks unnaturally protruded like this,
and not only when smiling but even when the face is expressionless, the aegyosal looks noticeably unnatural.
![[Rari Plastic Surgery] What Is the Problem with Non-Dissolving Aegyosal Fillers? (a.k.a. Foreign Substances) image 6](https://pub-9f2bb3498faf4d1d8714b41df24753e3.r2.dev/content/clinics/archive/tgzuf37zyh/naver_blog/laree2345/assets/by_hash/fa13b27d02281c28f124648c9833367a371f6f5f53085e43cb00ed93a59add54.jpg)
As you can see in this photo, there is this much filler (foreign substance) under the eyes,
and unlike the filler people usually know before the procedure, the foreign substance removed after surgery can be seen to have a firm shape.
![[Rari Plastic Surgery] What Is the Problem with Non-Dissolving Aegyosal Fillers? (a.k.a. Foreign Substances) image 7](https://pub-9f2bb3498faf4d1d8714b41df24753e3.r2.dev/content/clinics/archive/tgzuf37zyh/naver_blog/laree2345/assets/by_hash/729814cc851521cbd8c9cd7bba358627bf79aaa988a47deeb4ef0e32c942fbe8.jpg)
Another concern many people have is
whether the skin or muscle stretched by the filler will sag or become wrinkled after removal.
However, in reality, if proper surgery is performed to remove the unnecessary foreign substance,
the under-eye area can recover a relatively smooth and natural line without sagging or unevenness.
Recently, as more people prefer a natural and balanced under-eye line rather than an excessively full aegyosal,
the number of people considering aegyosal filler removal has been increasing.
However, as explained above, aegyosal filler removal surgery is a highly difficult procedure that requires delicate technique and extensive experience,
so it is important to consult with a doctor who has sufficient surgical experience and expertise and make a careful decision.
![[Rari Plastic Surgery] What Is the Problem with Non-Dissolving Aegyosal Fillers? (a.k.a. Foreign Substances) image 8](https://pub-9f2bb3498faf4d1d8714b41df24753e3.r2.dev/content/clinics/archive/tgzuf37zyh/naver_blog/laree2345/assets/by_hash/f880603789561e6bd82e21b762e76b1ea86e0c1edb2bf6751179f2f6f2d7779a.jpg)
![[Rari Plastic Surgery] What Is the Problem with Non-Dissolving Aegyosal Fillers? (a.k.a. Foreign Substances) image 9](https://pub-9f2bb3498faf4d1d8714b41df24753e3.r2.dev/content/clinics/archive/tgzuf37zyh/naver_blog/laree2345/assets/by_hash/5b8b6767103a2cdb5c599bc4d0a15da22dbbb67a96ccce36e63a835553e0c1b3.jpg)
![[Rari Plastic Surgery] What Is the Problem with Non-Dissolving Aegyosal Fillers? (a.k.a. Foreign Substances) image 10](https://pub-9f2bb3498faf4d1d8714b41df24753e3.r2.dev/content/clinics/archive/tgzuf37zyh/naver_blog/laree2345/assets/by_hash/f7ecf7b437af4dc9a9b4c24f2d912f17bf34c93473fb4083c742ff4a8410da84.jpg)