AI-translated archive post

Hongdae UltraCol, the “Reason” It’s Used for Under-Eye Hollowness

You&I Clinic Hongdae Sinchon · 닥터다람의 예뻐지는 피부비결 · January 23, 2026

Hongdae UltraCol, The “Reason” It’s Used for Under-Eye Hollowness ​ ​ “Because the area under my eyes looks sunken, I feel like I look older.” ​ “Under-eye hollowness, is there a n...

AI translation notice

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: You&I Clinic Hongdae Sinchon

Original post date: January 23, 2026

Translated at: April 20, 2026 at 6:37 AM

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

Hongdae UltraCol,

The “Reason” It’s Used for Under-Eye Hollowness

Hongdae UltraCol, the “Reason” It’s Used for Under-Eye Hollowness image 1

“Because the area under my eyes looks sunken,

I feel like I look older.”

“Under-eye hollowness,

is there a natural way to improve it?”

When the area under the eyes looks dark and sunken, it is easy to give the impression of being more tired or older than your actual age.

Many people are likely dealing with this concern.

Under-eye hollowness is mainly caused by reduced elasticity and changes in the fat layer due to aging.

As skin elasticity decreases, the skin around the eyes becomes thinner, and when the orbital septum weakens, fat may protrude or sag downward, creating shadows like dark circles.

If you want to improve under-eye hollowness more naturally, UltraCol can also be one option.

Today, we’ll take a closer look at how UltraCol actually helps improve under-eye hollowness, as discussed in reviews.

Hongdae UltraCol

  • What kind of procedure is UltraCol?

  • UltraCol 100? 200? What’s the difference?

Hongdae

What kind of procedure is UltraCol?

Hongdae UltraCol, the “Reason” It’s Used for Under-Eye Hollowness image 2

UltraCol is a collagen booster procedure that uses PDO (polydioxanone).

If you are interested in thread lifting, you may have heard of PDO before.

PDO is a material used in lifting threads, and over time it is naturally absorbed by the body while stimulating fibroblasts to help promote collagen production.

UltraCol is a procedure that processes this PDO material into very fine particles and injects them into the dermal layer of the skin.

When UltraCol is injected into a hollow under-eye area, it does not create excessive volume immediately, but instead improves the skin environment from within, allowing a more natural-looking volume to build up.

As a result, the under-eye area can appear smoother and elasticity can improve as well.

Hongdae UltraCol, the “Reason” It’s Used for Under-Eye Hollowness image 3

So why do so many reviews say they chose UltraCol instead of fillers?

In general, fillers use hyaluronic acid and can create volume immediately, but they tend to have a high viscosity.

Because of this, when used in thin and sensitive areas like under the eyes, they may look unnatural or appear puffy.

On the other hand, UltraCol induces collagen production while improving the skin’s internal structure, so a more natural change can be expected.

In particular, UltraCol is also considered advantageous because its particles are round and uniform, and its breakdown rate in the body is relatively fast, which lowers the risk of nodules.

Hongdae

UltraCol 100? 200? What’s the difference?

Hongdae UltraCol, the “Reason” It’s Used for Under-Eye Hollowness image 4

If you’ve looked into UltraCol, you may have seen that it is divided into 100 and 200.

The biggest difference between the two products is particle size.

UltraCol 100 is made up of relatively small particles, about 20–50 micrometers in size.

UltraCol 200 has larger particles, around 50–100 micrometers.

Because the particles are larger, it is more suitable for volume formation when injected into sunken areas, and the collagen-stimulating effect also tends to last relatively longer.

Hongdae UltraCol, the “Reason” It’s Used for Under-Eye Hollowness image 5

By contrast, UltraCol 100 is mainly injected into the middle or upper dermis, and is often used with a focus on improving skin texture, pores, and fine lines.

Because of this, UltraCol 200 is often recommended for areas with more noticeable hollowness, such as under the eyes.

However, if the skin is very thin or the degree of hollowness is not severe, UltraCol 100 may also be chosen.

The exact choice is best determined through consultation after checking the skin condition.

Hongdae UltraCol, the “Reason” It’s Used for Under-Eye Hollowness image 6

Hongdae UltraCol can help fill in the under-eye area without overdoing it when performed there, reducing shadows and creating a more lively appearance.

Its features include the ability to bring about a more natural change than fillers, while also offering the expected benefits of improved elasticity through steady collagen production.

In general, UltraCol 200 is often used under the eyes,

but the type and amount can vary depending on skin type and the degree of hollowness, so a precise treatment plan is best decided after consultation.

Thank you. This was Hongdae Sinchon UNI&U ^^

< The story of the Hongdae Sinchon branch built over 10 years >

< Hongdae Sinchon UNI&U Clinic Hours >

Weekdays: am 10:00 ~ pm 08:00 Weekends: am 10:00 ~ pm 05:00 (Treatment without lunch break)

< Directions >

UNI&U Clinic Hongdae Sinchon branch is

located near Hongik University Station.

Hongdae UltraCol, the “Reason” It’s Used for Under-Eye Hollowness image 7

Continue browsing

Keep exploring this clinic's public source trail

Return to the source archive for more translated posts, or open the Korean clinic profile to compare other public channels.