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Hongdae Skin Boosters: Rejuran and Juvelook—What Matters Most

차이의원 · 아름다움의 차이, 차이의원입니다. · April 23, 2025

These days, we are experiencing a continuing pattern of strong sunlight, occasional rain, and large temperature differences between day and night. On days with such significant tem...

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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: 차이의원

Original post date: April 23, 2025

Translated at: August 17, 2026 at 6:18 PM

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

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These days, we are experiencing a continuing pattern of strong sunlight, occasional rain, and large temperature differences between day and night. On days with such significant temperature fluctuations, your skin condition often fluctuates as well.

Those who have searched for skin boosters in Hongdae may also have these concerns.

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That is probably why you are looking into Rejuran, Juvelook, and various other skin boosters to find the one that suits you.

However, there is something you should look into before deciding which skin booster to receive. That is the practitioner's level of expertise.

I will explain why the practitioner's expertise is important, as well as the characteristics of representative skin boosters and how the practitioner's skill affects the treatment.

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Hello. I am Dr. Won-jin Cho, director of 차이의원.

“Would Rejuran be better for my skin, or Juvelook?”

This is one of the questions I have frequently received during my nine years of performing skin care treatments in Hongdae. Of course, deciding which treatment to receive is important. However, the practitioner's expertise is also important in determining your satisfaction with the treatment.

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I will explain why while briefly introducing Rejuran and Juvelook.

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First, Rejuran.

Rejuran is a highly versatile skin booster that can be used not only around the eyes but also across the face. It can provide a high level of satisfaction in areas including wrinkle reduction, improved elasticity, and hydration.

Rejuran is composed of a substance called polynucleotide, extracted from salmon DNA.

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Its primary target is the dermal layer of the skin, so it is often recommended for those who feel that their skin is pulling from within.

The reason for targeting the dermal layer is that it contains a high concentration of fibroblast cells, which induce collagen production.

Another advantage of Rejuran is that it comes in various types, allowing it to be used according to the intended purpose.

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To briefly introduce them:

Rejuran Healer: The representative Rejuran product that can be applied across the face

Rejuran i: A product that restores elasticity to thin areas such as fine lines around the eyes

Rejuran S: A product suitable for scar treatment and wrinkle improvement

Rejuran HB plus: A product combining Rejuran Healer with hyaluronic acid for hydration and lidocaine for anesthesia. With an anesthetic component added, it is recommended for people who are sensitive to pain, and is designed to increase satisfaction with the dewy glow and hydration of the skin after treatment

There are these four types.

Those looking into skin boosters in Hongdae may want to explore the products according to the improvements they hope to achieve.

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Juvelook is also one of the well-known products in the skin booster field.

It is a skin booster made by diluting PDLLA powder with sterile water for injection and injecting it into the skin.

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Because its particles are small and fine, it can be used in the skin layers. It also has a lower melting point than Sculptra, making it one of the skin boosters sought by many people.

Its primary target is the subdermal layer. As it is called a collagen stimulator, it stimulates collagen to induce regeneration and can provide a high level of satisfaction by increasing the volume of the skin layer itself.

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For those looking into skin boosters in Hongdae due to fine lines, enlarged pores, or loose skin, Juvelook may be suitable.

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Then, why should people looking into skin boosters in Hongdae pay more attention to the practitioner's expertise than to the characteristics of Rejuran and Juvelook, the subject of today's discussion?

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This is because it is important to inject an appropriate amount of the skin booster into its primary target layer.

Only then can you fully experience the satisfaction you expected from the skin booster treatment, while also minimizing the risk of side effects.

Let us first take a look at Rejuran.

Rejuran must be accurately injected into the thin dermal layer. Although the thickness of the dermal layer varies slightly from person to person, it is generally around 1 mm. The practitioner's expertise is extremely important because Rejuran can provide its full benefits only when it is accurately injected into this thin layer.

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What about Juvelook?

It is also important to inject Juvelook accurately into the subdermal layer. If it is injected too superficially, there is a risk of nodules or calcification. If it is injected too deeply, it moves away from the key layer that supports collagen production, which may reduce satisfaction.

The dilution ratio of PDLLA to sterile water for injection is also important for increasing satisfaction and reducing side effects, so careful planning before the treatment is essential.

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Today, I discussed with those looking into skin boosters in Hongdae what should be prioritized over the types of skin boosters and the level of satisfaction they may provide.

Based on my experience using more than 30,000 vials of Juvelook in Hongdae over nine years and performing treatments with various Rejuran products, I would like to add one more observation: satisfaction with skin booster treatments tends to be higher the better you are able to tolerate the pain.

I acknowledge that these treatments can be painful, but since they require your time and money, you may experience greater satisfaction if you are able to tolerate the pain well.

To summarize what I discussed today in two points:

  1. The practitioner's level of expertise

  2. Whether a detailed consultation process is provided

These are the two factors to consider, and once you do so, deciding which skin booster to receive should come naturally.

I hope this was helpful to those looking into skin boosters in Hongdae. I will conclude here.

This was 차이의원, customizing your beauty. Thank you.

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