PN Skin Booster in Korea: Book Day Two, Not the Last Day
Dr. Jong Seon Kim · Director, Gangnam HERA7 min read
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Is one week enough for a PN skin booster Korea trip, or will you board the flight home with needle bumps on your cheeks and a course you can't finish?
One session needs a single clinic visit, and the small injection bumps usually flatten within one to three days. Five to seven days in Seoul is enough if the session sits in the first two days. A full course is several sessions a few weeks apart, so one trip rarely holds all of it.
Hello, I'm Dr. Jong Seon Kim, Director of Gangnam HERA Plastic Surgery Clinic and a board member of the International Petit Medical Society.
For a short trip, three facts about HERA matter. We're registered with Korea's Ministry of Health and Welfare to treat international patients. An English interpreter is at every visit, at no extra charge. And the doctor who consults with you is the one who performs your treatment and follows up on your recovery.
If your flights are already booked, send your arrival and departure dates on WhatsApp with one photo of your bare skin in daylight, and ask which day of the trip a session could sit on.
Book a consultation
Send us your question or a photo on WhatsApp and we will reply in English.
How many days in Seoul does one PN session need?
Three clear days between the session and your flight is a workable minimum, and five to seven days in total is comfortable. The injection is one visit. The other days are for your skin.
PN goes into the upper layer of the skin as many tiny deposits. On skin, those beads are small raised bumps, and they usually soak in within one to three days.
Our hours shape the calendar. We're open Monday and Friday 10:00–20:00, Tuesday to Thursday 10:00–19:00 and Saturday 10:00–17:00, with lunch from 13:00 to 14:00. We're closed on Sundays and public holidays, so a Saturday-night arrival makes Monday your first possible day. Check Korean public holidays against your dates before you pay for flights.
Say you teach in Hanoi and have a long weekend: you land Thursday night and fly out Tuesday morning. Friday is the day for the consultation and the session, and we're open until 20:00. The bumps settle over Saturday and Sunday while you sightsee. Monday is your spare day, when the clinic is open again if something looks off. Reverse the order, with a session on Monday evening and a flight on Tuesday morning, and you fly with fresh bumps and no clinic day left.
Before you fly
Keep the session away from the day before departure. Cabin air won't harm the product. A bruise or swelling that shows up overnight, though, has nobody to look at it.
PN skin booster Korea: where sessions two and three happen
PN stands for polynucleotide: purified DNA fragments, in Rejuran's case from salmon. It supports the skin's own repair, so the change builds over weeks. One session on a trip is a start.
Most trip plans skip this part. You have three ways to handle it:
- Stay longer. A stay of three to four weeks can hold two sessions.
- Come back. If you pass through Seoul a few times a year, sessions can be spread across trips, with a slower build-up.
- Continue at home. Availability of injectable PN differs by country. Confirm that a licensed clinic near you offers it before you count on this.
Whichever you choose, carry a record home: the product name, the amount used, the areas treated and the date. How the product works and how the Rejuran types differ is in our Rejuran polynucleotide guide.
Who is PN right for on a short trip, and who should pick something else?
PN suits thin, dry skin with fine crepey lines, in someone who can arrange the later sessions. It does little for deep folds or lost volume, which are filler questions, and it won't lift a sagging jawline. If you need a visible change for an event this weekend, PN is the wrong tool.
Two alternatives come up often. For rough texture and pores, a collagen-stimulating booster may fit better; the Juvelook guide explains it, including that it is also given as a series and can leave small lumps under the skin in some people.
Its trade-off: placed too deep or dosed too high, it can stiffen expression for some weeks.
I look at the whole face before planning anything, then explain what will change and what won't. It's material for the diagnosis. The plan comes from the face-to-face consultation.
What does the written estimate cover?
You receive a written estimate before treatment, and foreign patients pay the same price as Korean patients. Four things move the number for a traveler:
- which PN product is used and how much of it
- the areas treated: full face, under-eye, neck
- how many sessions you do in Seoul
- anything combined in the same visit
Deposit and payment method are settled after the consultation, so those questions belong in the same WhatsApp chat where you ask what a first session would cost for your skin. Our hours and contact details are on Gangnam HERA's English home page.
What should you ask any clinic before booking?
In short, these work at any clinic in any city. Ask them wherever you book.
- Is the doctor who consults the person who injects?
- Will I see the sealed product opened, and can I photograph the label?
- Is the estimate in writing before treatment, and is it what local patients pay?
- Who interprets during the consultation and during the treatment itself?
- After I fly home, who do I message?
- If I can only do one session, what would you change?
What does your skin look like on day 0, day 3 and day 7?
Most of the visible recovery happens in the first three days.
| Day | Your skin | Your trip |
|---|---|---|
| Day 0 | Rows of small bumps, pinkness, tenderness | Back to the hotel. No makeup, sauna or alcohol that night |
| Days 1–3 | Bumps flatten for most people; a pinpoint bruise may appear | Sightseeing with sunscreen. Light makeup is usually fine from the next day |
| Day 7 | Skin usually looks like itself; a bruise may still be fading | Normal routine. Restart retinoids and acids once nothing stings |
Redness and bruising: what to watch for
A scheduling tip for Seoul: put the jjimjilbang, the body scrub and the long night out before the session. Heat, friction and alcohol in the first few days tend to prolong redness and bruising.
Bumps, bruises and the reactions that need a doctor
Bumps, redness, tenderness and small bruises are expected, and bruises can take a week or a little longer to clear. How fast yours settle differs with skin thickness and area, and the under-eye is the slowest.
Some people should wait or skip it, as general medical practice:
Risks and side effects to know
- an active infection, cold sore or inflamed acne flare in the area
- a laser or peel in the past couple of weeks
- isotretinoin treatment
- pregnancy or breastfeeding
- a fish or salmon allergy, since Rejuran's PN comes from salmon DNA
Mention blood thinners too; they make bruising more likely.
If something shows up after you're home
See a doctor near you promptly for redness that spreads and feels warm, pus, fever, pain that increases after day three, or a firm lump that grows. Hives, swelling of the lips or eyes, or trouble breathing is an emergency. Bring your record of the product, amount and date.
Before you book, list anything done to your face in the past month, such as a laser, a peel, a retinoid or acne medication. Send that list on WhatsApp with your departure time and ask whether any of it changes the timing.
Book a consultation
Send us your question or a photo on WhatsApp and we will reply in English.
Visiting HERA in Gangnam
We're at 4F, 9 Seocho-daero 73-gil, Seocho-gu, Seoul, a three-minute walk from Gangnam Station Exit 9.
My position on PN for travelers is plain: it's a course, and a trip holds a slice of it. I'd rather plan one well-timed session and tell you what it won't do than crowd sessions into a short stay. What decides your plan is how thin and dry the skin is, and how many sessions your calendar can hold.
There's no deadline on this. Your skin will still be a candidate on your next visit. Send your arrival and departure dates on WhatsApp and ask one thing: can a first session fit, and when would the second be due?
— Dr. Jong Seon Kim, Director, Gangnam HERA Plastic Surgery Clinic
FAQ
Frequently asked questions
Q1Can I fly the day after a PN skin booster?
Flying itself doesn't damage the product. The drawbacks are practical: the bumps are at their most visible in the first day or two, and if a bruise or swelling appears there is no clinic day left to have it looked at. Leaving at least two to three days before the flight avoids both.Q2Is PN the same thing as Rejuran?
PN, or polynucleotide, is the ingredient. Rejuran is a product made from it, using purified salmon DNA. HERA lists Rejuran, Rejuran HB and Rejuran I; which of them, if any, fits your skin is a question for the consultation.Q3How much does a PN session hurt, and for how long?
Most people still feel a sting with each small injection, more so under the eyes. Afterward the skin tends to feel tender, like a mild sunburn, for the rest of the day.Q4Can I have a laser treatment on the same trip?
Often yes, but the order and the gap between the two matter, and the treating doctor sets them after seeing your skin. Say at the consultation which treatments you hope to combine, so the plan covers the whole trip instead of one appointment.Q5What if months pass before my second session?
A long gap doesn't cause harm. The effect of the first session fades gradually, so the build-up starts again more slowly than it would on a two-to-four-week schedule. Bring your record of the first session so the next doctor knows the product, amount and date.
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On YouTube
Hear it from the doctors before you fly
Our doctors explain HERA's main treatments, lifting, filler and skin boosters, on camera, so you know who you are meeting and how they think before you land in Seoul.
Korean audio · auto-translated captions available on YouTube
16 videos
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Dr. Kim and Dr. Lee sort out how fillers, collagen injections and skin boosters differ, and which concern each one is for.
Dr. Jong · Dr. Jong - 7:36Clinic & doctors
HERA podcast ep. 3 — Dr. Kim and Dr. Lee look at the same face and explain the treatments they would choose, and why.
Dr. Jong · Dr. Jong - 8:07Lifting
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Dr. Jong - 5:44Lifting
How APTOS compares with other lifting threads, what recovery is like and how long results last.
Dr. Jong · Dr. Jong - 4:20Filler
Dr. Kim shows how injection technique changes with the amount of filler, and how filler dissolves.
Dr. Jong - 5:50Filler
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Dr. Jong - 5:20Filler
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Dr. Jong - 5:39Skin & boosters
Hydration, pores, breakouts or tone — matching the skin booster to what your skin actually needs.
Dr. Jong - 6:05Skin & boosters
Dr. Lee explains how Lituo and CaHA work, how they are injected and how often.
Dr. Jong - 5:00Skin & boosters
What Juvelook Eye is, what it is used for, how many sessions it takes and how long it lasts.
Dr. Jong - 5:56Lifting
Why lines form around the eyes, which treatments are combined, and Eye Thermage vs Eye Ulthera.
Dr. Jong - 4:58Lifting
Why Dr. Lee cares about lifting, and what he looks at first when he sees a patient.
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Visit us
Find Gangnam HERA
In Seocho-gu, Seoul, a three-minute walk from Gangnam Station Exit 9. Tap the map for directions.
Address
4F, 9 Seocho-daero 73-gil, Seocho-gu, Seoul, Republic of Korea
Opening Hours
Tuesday, Wednesday, and Thursday: 10:00 AM – 7:00 PM; Monday, Friday: 10:00 AM – 8:00 PM; Saturday: 10:00 AM – 5:00 PM; Lunch break: 1:00 PM – 2:00 PM; Closed on Sundays and public holidays
