Under-eye collagen injection Lituofine, is it also effective for dark circles?

Re2o Fine is a product developed based on existing Re2o's ECM technology to be applied to more delicate areas.

While maintaining Re2o's basic principle of directly injecting extracellular matrix (ECM) obtained from human acellular dermal matrix (hADM), it is a specialized line designed to be applied more precisely to thin and delicate skin areas such as under the eyes and around the eyes.

Rather than simply stimulating collagen production, it helps improve fine wrinkles and elasticity under the eyes by creating an environment where the skin can recover healthy tissues on its own.

🔍 What kind of procedure is Re2o Fine?

Re2o Fine is an ECM-based injection made from acellular dermal matrix (hADM) as a raw material. Here, ECM is a general term for structures that make up the dermis, such as collagen, elastin, and glycosaminoglycans. Simply put, it is a concept of putting components that act as the 'frame and cushion' of the skin under the eyes together.

In the same line, there is a parent product called 'Re2o'. Re2o has a large particle size of about 100µm, so it is used for thick skin such as the cheeks or forehead, while FINE has a particle size of about 50µm, which is half the size. This difference is important.

The skin under the eyes is about 0.3 to 0.5 mm thick, making it the thinnest part of the body, so if the particles are large, there is a higher risk of showing through the skin or clumping. This is exactly why the Fine product is mentioned for use under the eyes.

💧 Direct replenishment of ECM components including collagen

Many people get confused with Rejuran i (PN) or Juveederlook Volume/Juve look (PDLLA+HA) when they hear 'collagen injection'. Although the overall effect can be considered similar, there are differences in the injected components and the way they work.

• PN: PN (polynucleotide) component that improves the skin environment and helps skin regeneration. Rejuran i line.

• PDLLA: A biostimulator that stimulates fibroblast collagen production as it slowly degrades in the skin. Juvelook line.

• ECM (hADM): An approach to supplement the structure and regenerative environment of the skin by directly supplying ECM components such as collagen and elastin obtained from human acellular dermal matrix. Re2o Fine line.

Re2o Fine differs in that it directly replenishes the ECM components that make up the skin, rather than focusing solely on stimulating collagen production. The injected ECM supplements the environment of the skin tissue and can also help with the subsequent skin regeneration and tissue remodeling processes.

📊 What is the difference between Rejuran i, Juvelook, and fillers?

When looking into under-eye procedures, the names are so similar that it is confusing. We have summarized the different aspects in a table.

The biggest difference from fillers is whether it can be reversed. HA fillers can be dissolved with hyaluronidase even if a problem occurs, but ECM/collagen-inducing injections have limited methods for immediate dissolution. Therefore, it is much more important to inject the right amount into the correct layer from the beginning.

📌 Key Summary: Fillers have the advantage of immediate volume and dissolvability, while collagen-inducing injections have the advantage of natural skin quality improvement.

🎯 Is this procedure right for my dark circles?

This is the most important part. Dark circles are divided into four causes, and collagen injections do not work for all types.

• Pigment type: Melanin pigmentation. → Laser and whitening treatments are priority.

• Vascular type: Blood vessels show through. → Vascular lasers, etc. need to be combined.

• Structural type (sunken): Loss of volume such as tear troughs. → Regeneration and volume approaches are helpful.

• Fat protrusion type: Bulging under-eye fat. → Separate approaches are often required.

Collagen-inducing injections like Re2o Fine have a relative advantage in improving shadows, fine wrinkles, and rough skin texture caused by thin skin. Conversely, the pigment and vascular types are difficult to resolve with this procedure alone, and other treatments must be considered together.

If the tear trough is deep or fat protrusion is distinct, the approach changes. Onlif Clinic does not perform invasive incision surgeries, and in such cases, rather than recommending an unreasonable procedure, we look at the diagnosis to accurately classify the cause first. When multiple causes are mixed, we may approach it by combining skin boosters and lasers.

📌 Key Summary: It has limitations for pigment and vascular types, and is a procedure with strengths in improving thin skin, fine wrinkles, and texture.

⚠️ Thin under-eye skin, why you need to be more careful

The lower eyelid (under-eye) skin is thin, rich in blood vessels, and has sensitive lymphatics. Naturally, the difficulty of the procedure increases.

There are two main side effects we pay attention to. The Tyndall effect is a phenomenon where the product shows through thin skin and appears bluish, and nodules (clumping) is a problem where the injectables are not spread evenly, causing the surface to become uneven. This is why the choice of particle size, injection volume, and injection layer greatly influences the results.

To reduce bruising and swelling, a cannula is sometimes used instead of a needle. A cannula has a rounded tip, which helps reduce the risk of blood vessel damage. However, deciding which tool to use, and whether to inject into the dermis or subcutaneously, is a matter of judgment that depends on the condition under the eyes.

📌 Key Summary: Due to the characteristics of thin skin, there is a risk of Tyndall effect and nodules, so precise judgment of tools, volume, and injection layers determines the outcome.

🛡️ Follow at least these before and after the procedure

There are things to take care of for a safe recovery.

Things to avoid before the procedure

• Aspirin, anticoagulants, Omega-3, high-dose Vitamin E (increases risk of bruising)

• Drinking alcohol (from approximately 24 to 48 hours prior)

Things to refrain from for a few days after the procedure

• Sauna, hot baths, intense exercise, drinking alcohol

And a part you must remember. If the following symptoms appear, contact the clinic immediately. These can be signs of rare but serious complications in injections around the eyes.

• Skin turning pale, purple, or black

• Vision abnormalities, eye pain

• Pain that gradually worsens

• Pus, fever

If you are pregnant, breastfeeding, or have an autoimmune disease, you must inform us of your condition before the procedure. If you have a history of receiving under-eye fillers in the past, it is safer to first check if they can be combined using ultrasound or similar methods. Also, it is good to confirm during consultation whether it is an MFDS-approved item and whether the use under the eyes is within the approved scope.

📌 Key Summary: Avoid bruise-inducing components and alcohol, and report emergency signals such as color changes and vision abnormalities to the clinic immediately.

🌿 The way Onlif looks at the under-eye area

Onlif Clinic does not aim for plastic surgery that changes the shape of the eyes, nose, and mouth, but rather aims to remove skin concerns that mask one's natural impression. The same goes for the under-eye area. Rather than forcefully filling and pulling, we prioritize a non-surgical approach that restores the texture and elasticity of thin and tired skin.

There are various tools suitable for skin concerns, such as skin boosters, fillers, ultrasound HIFU/high-frequency RF, and thread lifting, but the key is not trying to solve all under-eye problems with a single procedure. Classifying the cause first, and doing only as much as necessary. In this context, Onlif's doctor specialty system also divides and manages each field.

📌 Key Summary: It is not about changing the shape, but rather naturally improving through non-surgical procedures tailored to the cause.

❓ Frequently Asked Questions

Does Re2o Fine directly inject collagen?

It directly replenishes ECM (extracellular matrix) containing collagen and elastin. The injected ECM supplements the skin tissue environment and can also affect regeneration and tissue remodeling.

What is the difference between Re2o and Re2o Fine?

The particle sizes are different. Re2o is about 100µm, mentioned for thick areas such as cheeks and forehead, while Fine is about 50µm, mentioned for the thin eye area. Because the skin under the eyes is thin, fine particles are used to reduce the risk of Tyndall effect and nodules.

How many sessions are needed, and when can I see the effects?

Normally, 3 sessions at 1-month intervals are considered basic, and then maintained at cycles of 6 months to 1 year. The time of appearance varies according to instructions from about 2 weeks to 4–8 weeks, and individual differences are significant.

I have severe dark circles, would this procedure be right for me?

Dark circles are divided into pigment, vascular, structural, and fat protrusion types. Under-eye collagen injections have strengths in improving thin skin, fine wrinkles, and texture, but have limitations for pigment and vascular types, so an accurate diagnosis of the cause comes first.

Can it be dissolved if it clumps or becomes bumpy?

Unlike hyaluronic acid fillers, ECM/collagen-inducing injections have limited methods for immediate dissolution. Therefore, it is especially important to inject the right amount into the correct layer from the beginning.

What symptoms after the procedure require immediate contact with the clinic?

If the skin turns pale, purple, or black, or if vision abnormalities, eye pain, worsening pain, pus, or fever appear, you must contact us immediately. These can be signs of serious complications such as vascular occlusion.

Re2o Fine Under-Eye Collagen Injection, things to check before choosing a clinic

Even for the same procedure, the results and recovery process differ depending on where, who, and how it is done.

Asking the following items directly during your consultation will help you make a decision.

• Is it a place that performs that procedure frequently? — Every clinic has different focus procedures. Check if it is a place that regularly performs Re2o Fine under-eye collagen injections.

• Can you check the products and equipment used? — Ask if you can verify the product name and whether it is genuine (whether it is an imported approved product, and if there is an opening verification process) during the consultation.

• Do they explain the cost structure? — Rather than just hearing the total amount, you should listen to the explanation of which product is used, how much, and on which area to make a judgment.

• Do they design looking at the whole face? — Even with the same procedure, the injection location and amount vary depending on the face shape, skin condition, and left-right asymmetry.

• Do they explain adverse reactions and the recovery process first? — It is better to choose a place that informs you of possible adverse reactions and coping methods together, rather than a consultation that only talks about expected changes.

• Is there a way to follow up after the procedure? — Check if the progress check timing, how to contact if there is an issue, and re-visiting criteria are established.

Onlif Clinic does Re2o Fine under-eye collagen injections like this

• We divide responsibilities — With the thought that a single doctor does not handle all procedures, Onlif divides and treats patients with in-charge doctors by field.

• We check products and equipment together during the consultation — We guide you through the products used and the opening verification process during the consultation.

• Costs are guided along with the structure after diagnosis — Since the area, volume, and scope differ for each person, we explain what costs how much together.

• We design looking at the overall balance of the face — We view the face based on the three axes of texture, balance, and signals of youth, and make plans in a direction that tidies up parts covering your natural impression rather than changing the shape.

• We tell you about adverse reactions and the recovery process first — Along with the changes that can be expected, we guide you on individual differences, possible adverse reactions, and countermeasures before the procedure.

• We look at the progress after the procedure together — If verification is needed during the recovery period, we guide you on re-visits and contact channels.

If you are considering Re2o Fine under-eye collagen injections, it is recommended to first check what is possible and what is difficult in your current condition.

An accurate diagnosis and treatment plan can only be determined through face-to-face treatment. Check it out through a consultation at Gangnam Onlif Clinic.