Gangnam Re2O Treatment: Controversy Over Use of Human Tissue and Side Effects? Misconceptions and Facts About Re2O.

Gangnam Re2O Treatment: Misconceptions and Facts About Re2O

Hello.

I’m Mira Lee, Chief Director of Banni Plastic Surgery | Skin Clinic.

Gangnam Re2O Treatment: Controversy Over Use of Human Tissue and Side Effects? Misconceptions and Facts About Re2O

If you are interested in Re2O, you may have wondered about this at least once.

"They say Re2O contains human-derived ingredients, but what exactly does that mean?"

"I even saw the expression 'cadaver collagen' for Re2O online. Is that really true?"

These questions also come up repeatedly during consultations.

Some people become curious about Re2O because of reviews saying, "It seems to work well," while others hesitate because they feel the raw materials are unsettling. Especially when sensational expressions spread, it becomes easy for fact and misconception to blur.

For topics like this, I think it is better to first organize what is actually true, rather than simply concluding that it is "fine" or "problematic."

Gangnam Re2O Treatment: Controversy Over Use of Human Tissue and Side Effects? Misconceptions and Facts About Re2O.

So today, from a medical professional’s perspective, I’d like to calmly explain what human-derived acellular dermal matrix (hADM), the core of the controversy surrounding Re2O, actually is, and how safety is managed through what standards and processes.

[ Table of Contents ]

1. Is Re2O a safe skin booster?

• Re2O cannot be regarded as an illegal procedure.

• Ingredients of Re2O: Definitions and characteristics of ECM and acellular dermal matrix (hADM)

• Clinical use of ADM: Re2O has a history that goes back years.

2. Side effects caused by Re2O? Inflammation, lumps, swelling

• Re2O treatment should be done at these dermatology clinics.

• Causes of cases involving lumps + swelling for more than a month after Re2O treatment

• Precautions that must be followed after Re2O treatment

3. So what is good about Re2O?

• Differences between Re2O and other skin boosters (Rejuran · Juvelook)

• Re2O is recommended for these people.

Is Re2O definitely a safe procedure? Gangnam Re2O treatment, fact-checking by the director of a Gangnam skin clinic

Efficacy and safety of the hADM skin booster, Re2O’s main ingredient, studied at the Department of Dermatology and Skin Biology Research Institute, Yonsei University College of Medicine

https://clinicaltrials.gov/study/NCT07155278?utm_source=

① Ellavie Re2O (Re2O) cannot be regarded as an illegal procedure.

Currently, Re2O is being performed at medical institutions under the judgment of medical professionals, and all medical procedures may respond differently depending on the individual’s condition. It is important to determine suitability through sufficient consultation and prior evaluation.

L&C Bio, manufacturer of Re2O, obtained certification from the American Association of Tissue Banks (AATB)

L&C Bio, the manufacturer of Ellavie Re2O, holds certification for the quality management system for human tissue processing from the American Association of Tissue Banks (AATB) (hereinafter, AATB certification).

• AATB is the most authoritative global standard organization for managing the safety and quality of human tissue. Only two companies in Korea hold AATB certification, including L&C Bio, the manufacturer of Re2O.

In addition, Re2O is not a "medical device" but a human tissue, and the main ingredient of Re2O, allogenic dermis (hADM), has already been used in the past for burn treatment and tissue reconstruction, so it is an ingredient with medically established safety.

② Ingredients of Re2O: Definitions and characteristics of ECM and acellular dermal matrix (hADM)

So you may be wondering, what exactly is allogenic dermis? Before acellular dermis, you need to understand ECM first, because understanding ECM makes Re2O easier to grasp.

Normal dermal structure (cells + ECM)

Normal dermal structure before Re2O is made

Normal dermis is made up of cells + extracellular matrix (ECM). ECM is a support structure made of collagen, elastin, and more, and cells function on top of it.

After decellularization (cells removed → only ECM structure remains = hADM)

The process of making Re2O, decellularization

When the decellularization process removes the cells, only the ECM structure remains, and this ECM-based structure is hADM.

The process of making Re2O, components of the ECM

ECM stands for Extracellular Matrix, or extracellular matrix in Korean. It means a "structure existing outside the cells."

If you understand the skin by comparing it to a house, cells are like furniture, and the ECM plays the role of the floor and pillars that support that furniture.

The components of ECM are as follows.

Components of ECM
Collagen
Elastin
Hyaluronic acid
Glycoproteins · proteoglycans

ECM (extracellular matrix) is the structural foundation that supports skin cells. Rather than simply increasing the amount of collagen, supplementing the environment in which cells can function stably is the core concept of recent regenerative treatment.

As we age, it is not just collagen that decreases; the entire ECM structure becomes looser. What happens when the ECM structure becomes looser? Common signs of skin aging appear: thinner skin, more fine lines, decreased elasticity, and reduced recovery ability.

And hADM (human-derived acellular dermal matrix) is a pure ECM structure that has gone through a processing procedure in which all cells and fat components that trigger immune rejection in the skin are removed, while preserving the tissue’s original three-dimensional structure and breaking it down into tiny particles so it can be injected.

Therefore, Re2O uses hADM with an ECM structure to supplement the skin’s "supportive environment," and it is a procedure that is more strongly for therapeutic purposes than cosmetic purposes.

③ Clinical use of ADM: Re2O has a history of validation passed down from the past.

Clinical use of ADM: Re2O has a history of validation passed down from the past.

The hADM (human-derived acellular dermal matrix), the core ingredient of Re2O, is a material that has been used in a variety of reconstructive fields long before it was applied for cosmetic purposes. For example, ADM has been researched and used as a structural scaffold in burn treatment and skin defect reinforcement, breast reconstruction surgery, soft tissue reconstruction, periodontal tissue regeneration, abdominal wall reconstruction, and more.

However, the focus that patients care about most regarding Re2O is the issue of cadaver use. The expression that Re2O’s ingredients are extracted directly from cadavers can be somewhat misleading, and of course, it can cause emotional discomfort.

Human tissue used in medicine is provided through voluntary donation by individuals, and it is used for medical purposes only after strict management and processing at tissue banks. It may differ only in the donated part, but the purpose is no different from that of organ donation.

Because Re2O is human-derived, it undergoes even stricter processing and testing. Only the acellular structure with the cells removed is used, and it is supplied to medical institutions through sterilization and management procedures. Of course, no procedure can be 100% risk-free, but if appropriate screening and dosage adjustment are performed, it can be carried out safely enough.

Many people feel psychological discomfort because it is a "human-derived ingredient." As the director of a Gangnam dermatology clinic who puts the patient’s perspective first, I fully understand this reaction.

Medicine is not something to be forced; it is a choice. It is most important to receive a sufficient explanation and decide according to your own values.

Side effects caused by Re2O? Gangnam Re2O treatment, fact-checking by the director of a Gangnam skin clinic

For any material, safety is determined by five things: patient screening, appropriate dosage, injection depth, a sterile environment, and post-procedure monitoring. Re2O is no different; the key is to inject the appropriate amount into the right candidate and the correct layer. Excessive dosage or repeated procedures at short intervals can cause problems with any regenerative injection.

① Re2O treatment should be done at these dermatology clinics.

It is important to thoroughly check the patient’s autoimmune diseases, recent inflammatory skin conditions, past filler/regenerative injection treatment history, and medication use.

Gangnam Re2O treatment should be done at these dermatology clinics.

Also, injections for regenerative purposes are not a case of "the more the better." The proper dosage and depth for the patient must be strictly followed.

Gangnam Re2O treatment should be done at these dermatology clinics.

Most infectious side effects are related to the treatment environment. Observing sterilization protocols is the most basic requirement.

Also, it is one way to protect the patient’s skin to avoid hospitals that focus only on the effectiveness of the procedure while downplaying the possibility of side effects.

Gangnam Re2O treatment should be done at these dermatology clinics.

At Banni, as a dermatology clinic that puts the patient’s condition first, we determine whether the procedure is suitable for the patient and provide a thorough personalized skin booster experience.

② Causes of cases involving lumps + swelling for more than a month after Re2O treatment

Human-derived acellular dermis is a material from which cells have been removed to reduce the possibility of immune reactions, but depending on an individual’s constitution and injection conditions, inflammatory reactions or nodules can still occur.

As mentioned repeatedly above, the actual incidence of side effects varies greatly depending on the amount used, dosage, injection depth, and the individual’s immune status, so the results can differ from patient to patient. This applies not only to Re2O but to all procedures.

In cases where such side effects appear after Re2O treatment, the most common cause is not a bacterial infection but an "inflammatory or immune reaction."

The human-derived acellular dermal matrix (hADM), the core ingredient of Re2O, is a material with reduced immune reaction potential because cells have been removed, but because a new substance is introduced into the body, a certain level of inflammatory response naturally occurs.

Especially if there is no improvement even after taking antibiotics, the possibility of aseptic inflammation or a delayed immune reaction should be considered first rather than a bacterial infection. In such cases, anti-inflammatory treatment or observation may be more important than antibiotics.

Also, because of the nature of substances that induce regeneration, if the tissue reacts excessively, more collagen may be produced, which can temporarily feel like a firm lump. The important point is that the existence of such cases does not mean they happen the same way to everyone. Therefore, for regenerative procedures such as Re2O, who the treatment is performed on and under what conditions matters more than simple effectiveness.

③ Post-procedure care after Re2O treatment, precautions

Care after the procedure also has a major effect on the outcome.

Post-procedure care after Re2O treatment, precautions

⑴ Avoid strong pressure on the treatment area

Putting strong pressure on the treated area is a fast track to causing inflammation.

Post-procedure care after Re2O treatment, precautions

⑵ Limit alcohol and sauna use for 1–2 weeks

Alcohol and high-temperature environments can cause blood vessels to dilate and make swelling last longer.

Post-procedure care after Re2O treatment, precautions

⑶ Avoid strenuous exercise for one week

Excessive increase in blood flow can worsen swelling and bruising.

Post-procedure care after Re2O treatment, precautions

⑷ Do not self-diagnose if unusual symptoms occur

If swelling persists for an unusually long time or the pain becomes severe, do not rely on information from the internet; contact the clinic that performed the procedure immediately.

⑸ Decide on additional procedures only after sufficient recovery

The interval matters for regenerative procedures. Repeating the procedure before tissue reactions have stabilized can increase the risk of nodules.

After Re2O treatment, temporary redness and mild swelling may appear, and in most cases they ease naturally within a few days. This is a common reaction observed in injection procedures. However, if the symptoms worsen or recovery is delayed, medical evaluation is necessary. Appropriate aftercare and observation have an important effect on the treatment outcome.

So what is good about Re2O? - What makes Re2O unique, advantages Gangnam Re2O treatment, fact-checking by the director of a Gangnam skin clinic

① Differences between Re2O and other skin boosters (Rejuran · Juvelook)

Differences between Re2O and other skin boosters

In the case of popular skin boosters like Rejuran and Juvelook, Rejuran is characterized by salmon-derived PN ingredients that stimulate skin regeneration signals, while Juvelook uses synthetic polymer-based ingredients that induce collagen production. In other words, Rejuran and Juvelook are closer to inducing regeneration rather than directly regenerating the skin.

On the other hand, Re2O directly injects an ECM structure based on human-derived acellular dermal matrix (hADM) into the skin, so ingredients such as collagen, elastin, and hyaluronic acid go directly into the skin.

Also, with Rejuran and Juvelook, the ability to synthesize collagen varies from person to person, and the difference in effectiveness can be significant depending on that ability. Re2O, however, injects the finished product as is, so even people who tried other skin boosters and felt the effect was minimal may be able to feel a result.

Category	Rejuran	Juvelook	Re2O
Main action	Induces cell regeneration	Stimulates collagen production	Reinforces ECM structure
Viscosity	Relatively high	Cohesive	Relatively good dispersibility
Injection layer	Shallow dermis	Shallow dermis	Mid to deep dermis
Embossing	Common	Common	Relatively rare

Differences between Re2O and other skin boosters

Both Re2O and Rejuran use the same method of delicately injecting a short needle into the face, but the pain itself tends to be less than with Rejuran.

Previous image Next image

Photo review immediately after receiving a Rejuran skin booster treatment at Banni

Another difference appears after the procedure. With skin boosters such as Rejuran and Juvelook, highly viscous particles remain evenly in the shallow layers of the skin, causing a temporary raised appearance called embossing.

By contrast, Re2O is usually injected into the mid-to-deep dermis, and because it has lower viscosity and better dispersibility than Rejuran or Juvelook, there is almost no embossing.

② Re2O treatment: who is it good for?

As the director of a Gangnam dermatology clinic, the cases I would recommend for Re2O treatment are...

Re2O treatment: who is it good for? Previous image Next image

Recommended cases for Re2O treatment

• When pores have become enlarged

• When there are severe skin scars (acne scars, boxcar scars, rolling scars, etc.)

• When the skin has generally become thinner and elasticity has decreased

• When fine lines have increased and the skin has become structurally weaker

• When you need reinforcement of firm skin tissue rather than simple moisture supply

It is not a procedure recommended for everyone. Please note that the choice of procedure depends on the condition of the skin, not on trends.^^

Gangnam Re2O Treatment: Controversy Over Use of Human Tissue and Side Effects? Misconceptions and Facts About Re2O

To conclude...

I do not think Re2O is a procedure to approach simply as a "trendy skin booster." There has been controversy because it contains human-derived ingredients, and there were concerns about side effect cases as well. But medicine should be judged not by sensational words, but by its structure, principles, and how it is applied.

Re2O differs from Rejuran and Juvelook in its mechanism of action, and the direction of selection may also vary depending on skin condition. What matters is not which product is better, but whether factors such as my skin thickness, the degree of elasticity loss, regenerative ability, and previous treatment history were considered comprehensively.

That is why, during pre-procedure consultations, I first think not about "whether this procedure is possible," but about "whether this procedure is suitable."

Rather than creating excessive expectations, I think it is the role of medical professionals to honestly explain the possible range of changes and, if necessary, suggest other methods.

For all regenerative procedures, including Re2O, results depend less on the ingredient itself and more on how accurately the patient is selected and what depth and approach are used.

I hope this post has helped clear up some of the vague anxiety and curiosity about Re2O.

If you have any further questions about Re2O, please feel free to contact us at Banni anytime. We will sincerely help you with even the smallest concern or question.

Less exaggeration, higher standards. This was Mira Lee. Thank you.