Hello, I am Dr. Nk Park, board-certified plastic surgeon and director of Noonopi Plastic Surgery in Seoul.
The slightly plump area under the eyes, known as Aegyo-sal (often called "charming fat"), is a stunning point that makes your impression look more glamorous and refreshed. Because of this, many people spend a lot of time every morning on Aegyo-sal makeup or seriously consider getting an Aegyo sal filler.
Today, I would like to explain the principles behind Noonopi Plastic Surgery’s specialized Aegyo-sal fat graft, and detail exactly why so many patients are choosing fat transfer over traditional fillers through real before-and-after cases.
How Exactly is Aegyo sal Surgery Performed?
The true identity of Aegyosal is actually "muscle." Specifically, it is the phenomenon where the pre-tarsal part of the orbicularis oculi muscle contracts and bulges slightly.
However, we cannot surgically enlarge the size of this muscle itself. The eye area is responsible for subtle and diverse facial expressions. Surgically manipulating the expression muscles can result in a highly artificial and unnatural look.
Therefore, rather than touching the muscle, it is much safer and more natural to add volume to the shallow layer above the muscle. This is the fundamental principle of the Aegyo-sal fat graft.
"Won't injecting fat make my under-eyes lumpy?"
The skin under the eyes is the thinnest on our entire body. If fat is injected excessively or in large clumps into this shallow layer, there is a clear risk of it feeling lumpy or looking uneven on the surface.
That is why at Noonopi Plastic Surgery, we meticulously separate the fat particles and utilize a precise blend of two types:
- Micro-fat: Small, soft particles that contribute to natural volume formation and facial rejuvenation.
- Nano-fat: Rather than adding volume, this is rich in stem cells, aiding in skin regeneration and improving the smooth texture of the surface. (Click for more details on Nano-fat)
Real Patient Stories: Reclaiming Attractive Under-Eyes
The ideal size of Aegyo-sal varies by personal preference, but having a "moderately plump look" even when expressionless is often a symbol of youth and vitality. Let me introduce two patients who achieved an attractive under-eye look through a fat graft rather than an Aegyo sal filler.
Case 1: "My Aegyo-sal disappeared as I got older" (Male in his 30s)
Often, the Aegyo-sal that was visible in your 20s starts to disappear as you age. This happens because the muscle creating the Aegyo-sal thins out due to aging, or because protruding under-eye fat (eye bags) bulges out, relatively burying and hiding the love bands.
A male patient in his 30s visited our clinic concerned about his bulging under-eyes and dark circles. I performed Under-Eye Fat Repositioning to treat the dark circles while simultaneously performing an Aegyo-sal fat graft to restore his flattened under-eye area.
Can you see how the dark circles have diminished, and a clean, subtle Aegyo-sal has taken its place? Even for men, a slight Aegyo-sal makes the overall impression look much softer and younger.
Case 2: "I'm terrified of filler side effects" (Female in her 30s)
"Dr. Park, I refuse to go outside without my Aegyo-sal makeup. I spend 20 minutes every morning just on my under-eyes. I thought about getting an Aegyo sal filler dozens of times, but I absolutely hate the idea of it looking blue and see-through."
This patient was highly stressed by her flat under-eyes once she removed her makeup, but she strongly detested the artificial look of fillers. Unlike men, women often prefer a slightly more prominent volume that mimics the look of makeup, so we meticulously performed the fat graft tailored to her specific needs.
Dr. Park's Diagnosis: The patient's concerns were completely valid. When a gel-type hyaluronic acid filler is injected into the thin skin under the eyes, light refracts through the skin, easily creating a bluish tint known as the Tyndall effect. Furthermore, if you rub your eyes or as time passes, the filler can gradually spread downward, making the under-eyes look puffy and tired. Therefore, I proposed the Aegyo-sal fat graft as the most natural, semi-permanent alternative, and the results were highly satisfactory.
4 Reasons Why an Aegyo-sal Fat Graft is Superior to Filler
So, why exactly is using your own fat through surgery more advantageous in the long run compared to fillers?
1. Superior Biocompatibility:
No matter how safe commercial fillers are, they are ultimately synthetic materials. Autologous fat uses 100% of your own body tissue, bringing the risk of allergic or immune rejection close to zero.
2. No Foreign Body Sensation (Natural Expressions):
Because it is not an external substance, there is no feeling of a foreign object. Once the fat has successfully grafted, it assimilates perfectly with your own flesh, moving completely naturally without hindering muscle movement when you smile or frown.
3. No Tyndall Effect:
As mentioned earlier, clear gel fillers injected into shallow skin layers can look blue under the light.
However, autologous fat is opaque and yellowish. Even under the thin under-eye skin, it does not show through and blends naturally with your original skin tone.
4. Does Not Interfere with Future Surgeries:
As aging progresses, you may eventually need a lower blepharoplasty or under-eye fat repositioning. Existing fillers alter the anatomical structure of the tissue, requiring the hassle of dissolving injections before surgery. Autologous fat, on the other hand, does not obstruct the surgical field.
Of course, Aegyo-sal Fillers have their pros too.
As a board-certified Korean plastic surgeon, I must present the objective facts. Fillers definitely have some advantages over fat grafting:
- Simplicity: It finishes in 10 minutes without the need for sedation.
- Reversibility: If you don't like the shape, you can dissolve it with an enzyme injection.
However, there is a reality you must keep in mind. Hyaluronic acid fillers do not always dissolve 100% perfectly. The older the filler gets, the more it can tangle with the dermal tissue in your body, forming capsules or becoming clumpy. In these cases, even after receiving dissolving injections, residues often remain and cause problems.
Aegyo-sal Fat Graft: True Love Bands That Become Your Own
In conclusion, the Aegyo-sal fat graft is a highly delicate, advanced surgery that injects pure autologous fat—harvested from the patient's body—in microscopic amounts layer by layer around the orbicularis muscle. When performed with the proper technique, the grafted fat becomes your own natural flesh and is maintained permanently without migrating or sagging.
On the day of her post-op checkup, the female patient in her 30s came in without makeup, smiling brightly.
"Dr. Park, my morning makeup routine is cut in half!
The volume that pops up when I smile looks so much more natural than my friends who got fillers.
I am totally satisfied."
If you feel disappointed by your flat under-eyes every time you look in the mirror, skip the artificial procedures and consider an Aegyo-sal fat graft—the safest alternative filled with your own natural tissue.
