Rejuran at Sinnonhyeon Station: The Skin’s Inner Layers That Topical Care Cannot Fill

The Skin Also Has the

Power to Recover

No matter how carefully you apply topical cosmetics, you may have experienced the feeling that something is still missing.

A woman in her thirties once told us that every time she looked in the mirror after washing her face, her skin felt thinner and rougher.

She said that although she had not particularly neglected her skincare, her skin no longer felt as firm as it used to.

Recently, more and more people have been looking into Rejuran at Sinnonhyeon Station and taking an interest in skin regeneration from within.

Leejiham Dermatology is located on Gangnam-daero in Seocho-gu, Seoul, between Sinnonhyeon Station and Gangnam Station, so many people visit us from nearby to have their skin assessed.

Today, as Director Lee Yoo-deuk, I would like to calmly summarize how Rejuran works within the skin and what you may want to know in advance.

What Part Beneath the Skin

Does This Treatment Affect?

Rejuran is a treatment that directly delivers PN, or polynucleotide, an ingredient extracted and purified from salmon and other sources, into the dermal layer.

This ingredient is known to resemble substances involved in the body’s natural tissue-repair processes, and to work by supporting the skin as it organizes its own environment.

While topical care mainly remains on the outermost layer of the skin, Rejuran at Sinnonhyeon Station takes a different approach by targeting the dermal environment, where collagen and moisture interact.

While hyaluronic acid fillers add volume by filling sunken areas, Rejuran focuses less on adding volume and more on caring for the foundation on which the skin rests.

For this reason, many people choose it with the goal of improving not only surface smoothness but also the skin’s overall density, elasticity, and fine lines.

These Concerns May Be Worth Noting

When asked who tends to be interested in this treatment, the concerns are generally similar.

Many people experience significant tightness after washing their face, makeup that flakes or does not sit smoothly, the early appearance of fine lines around the eyes or mouth, or small marks remaining where acne once was.

Others choose to take care of their skin in advance because they want to maintain its current condition for as long as possible rather than seek a major change.

However, if you have pronounced redness, are pregnant or breastfeeding, or have reacted to a particular ingredient, it is important to assess your condition first before deciding whether to undergo the treatment.

This also means that it is not a treatment recommended in exactly the same way for everyone.

Why the Same Treatment Can Feel Different

What is interesting is that even people who undergo the same treatment can experience it differently.

We often hear people say, “My friend said her skin became more hydrated, but I cannot really tell.”

This is because the speed at which the skin responds varies depending on skin thickness, the extent of aging, usual moisture levels and lifestyle habits, as well as the number of treatment sessions.

Rather than usually ending after a single session, Rejuran is more like a treatment performed over several sessions at intervals of a few weeks, while the skin’s texture and density are observed gradually.

Some people feel that their skin has become more hydrated after just one treatment, while others gradually notice an increase in density after three or four sessions.

Therefore, rather than making a hasty judgment based only on the first treatment, it may be better to review the overall process after completing the planned course.

There are individual differences in treatment effects and how long they last, and it is important to understand in advance that further care may be needed as time passes.

When looking into Rejuran at Sinnonhyeon Station, it can also be helpful to focus on observing the course of your own skin rather than expecting one dramatic change.

Stinging and Swelling:

We Will Explain Them Honestly

Since this treatment involves injecting the ingredients, there is a stinging sensation when the needle enters.

Rather than brushing this aside, we believe it is right to explain it as it is.

If you are concerned about pain, numbing cream can be applied before the treatment to reduce the sensation to some extent. Even so, we would not describe the treatment as causing no irritation at all.

After the treatment, the injection sites may become red or slightly raised, and some people may also develop visible bruising.

These reactions generally subside gradually over several days.

On the day of the treatment, gentle cleansing is recommended. It is better to postpone heavy makeup, saunas, strenuous exercise, and alcohol for several days, as this may support recovery.

Using sun protection when going outside can also help the skin settle.

If you are planning to undergo Rejuran at Sinnonhyeon Station, it is better to schedule it with enough time before any important engagements rather than within the few days immediately beforehand.

Without Going Too Far—At the Skin’s Own Pace

In summary, Rejuran is less about making a major change and more about supporting the skin’s natural process of recovery.

What we always keep in mind is providing comfortable-looking results rather than excessive change, along with care that is explained honestly.

For this reason, rather than emphasizing an excessive number of sessions, we prefer to consider together how much care is needed based on the skin’s current condition.

If you are considering Rejuran at Sinnonhyeon Station, we recommend first considering whether the approach will allow you to care for your skin over the long term, rather than focusing on impressive promises.

Instead of being swayed by other people’s reviews or popular treatment schedules, it can be reassuring in the long run to use your skin’s current condition as the 기준 for your decision.

We hope the information summarized today will be of some help in making your decision.

Frequently Asked Questions (Director Lee Yoo-deuk)

Q1. How often should I receive Rejuran?

A. It varies depending on the condition of your skin, but it is commonly performed over several sessions at intervals of 2–4 weeks, followed by maintenance at longer intervals.

Rather than deciding on the number of sessions from the beginning, it is better to adjust the plan while observing your response.

Q2. Can I return to my daily activities immediately after the treatment?

A. Most people can return to their daily activities without significant difficulty, but redness or slightly raised marks may remain temporarily at the injection sites.

If swelling or bruising would be a concern in your circumstances, it is better to schedule the treatment on a day when you have some flexibility.

Q3. How is Rejuran different from other skin boosters?

A. The ingredients and target areas differ somewhat.

Rejuran uses PN to support the environment within the skin, while treatments that focus on moisture or volume have different purposes.

The most accurate way to determine which is appropriate is to examine the condition of your skin directly.

Q4. I am worried that the stinging will be very painful.

A. There is a stinging sensation when the needle enters.

Numbing cream can reduce it to some extent, but we would not say that there is no irritation at all.

If you are particularly sensitive to pain, please feel free to let us know before the treatment.

📍 5th Floor, Suite 502

429 Gangnam-daero, Seocho-gu, Seoul

(Dongil Building, Seocho-dong)

· Near Sinnonhyeon Station and Gangnam Station

☎ 02-567-5900

🕒 Clinic Hours

· Monday, Tuesday, Thursday, Friday 10:00–19:00

· Saturday 10:00–17:00

· Weekday lunch break 13:00–14:30

· Closed Wednesday, Sunday, and public holidays