Rejuran Recovery Day by Day: Bumps, Bruises and Your Flight
Dr. Jong Seon Kim Β· Director, Gangnam HERA8 min readLast updated 
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Booked a short trip to Seoul and wondering whether the Rejuran bumps will still be on your face when you board the plane home?
Rejuran recovery day by day is short for most people: the small raised bumps usually flatten within about a day, sometimes two, and redness fades over one to two days. A bruise, if you get one, can take up to about a week to fade, so I'd keep at least two or three days in Seoul after the injection and never book it for the day before your flight.
Hello, I'm Dr. Jong Seon Kim, Director of Gangnam HERA Plastic Surgery Clinic in Seoul and a board member of the International Petit Medical Society.
For a traveler, three facts matter here. HERA is registered with Korea's Ministry of Health and Welfare as a foreign-patient medical institution, and a medical interpreter for your language is provided at no extra charge, so the aftercare instructions are clear before you leave the room. The doctor who consults you is the one who injects you and follows up on your recovery, so whoever you ask about a bruise on day three already knows your face.
If your dates are already set, send your arrival and departure dates on WhatsApp and ask which day of the trip the injection should go on. English is fine.
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Send us your question or a photo on WhatsApp and we will reply in English.
Who Rejuran suits, and who should wait
Rejuran is a polynucleotide injection made from purified salmon DNA, and it comes in several versions, including Rejuran, Rejuran HB and Rejuran I. It works on the quality of the skin: rough texture, crepey fine lines, dullness and thin skin under the eyes. It does not lift a cheek that has dropped or fill a hollow.
If your main complaint is sagging along the jaw, I'd tell you plainly that a skin booster is the wrong tool. Lifting is a separate conversation, and my notes on how Ultherapy results develop over the months cover that side, including the temporary tenderness focused ultrasound can leave. I'd rather do only what your skin needs, so the first question is whether Rejuran answers your complaint at all. If you're still at that stage, start with my guide to polynucleotide skin boosters and Rejuran.
Some people should postpone the injection or skip it. As general medical guidance, that includes:
Risks and side effects to know
- an active acne flare, cold sore or any infection in the area to be treated
- a laser treatment or chemical peel on the same skin in the last couple of weeks
- isotretinoin taken now or recently
- pregnancy or breastfeeding
- a known allergy to fish or salmon products, since polynucleotides are salmon-derived
- blood thinners or supplements such as fish oil, which make bruising more likely (never stop a prescribed medicine without the doctor who prescribed it)
Mention every one of these at the consultation, even if it seems minor. The last one matters most for your schedule, because bruising is what stretches a recovery from one day to a week.
What's included in a Rejuran visit?
Consultations at HERA are by appointment, and treatment begins with a 1:1 consultation and a plan for your skin. You get a written estimate before anything is injected, and foreign patients pay the same price as Korean patients, with no surcharge.
What moves the estimate for your case is fairly predictable: which version of Rejuran suits the area, how much skin is treated (the eye area alone or the full face), how many sessions make sense for your goal, and whether you combine it with another treatment on the same trip. Deposit and payment method are settled after the consultation. For your own face, message a photo of the area on WhatsApp and ask what a single session would cost and how the deposit works for a visit like yours.
Who does the injection, and what do you see opened?
At HERA the specialist who consults with you is the one who performs your treatment; it is never handed off. That matters for recovery more than people expect. The size and position of each bump depend on how deep and how much product is placed, and the doctor who placed it knows where each one should be on day two.
We use only genuine, approved products, and the sealed vial is opened in front of you. A small tip for your visit: read the label before the vial is opened, so you know which Rejuran version went into your skin. If you ever need a doctor at home to look at the area, the product name is the first thing they'll ask for.
We also don't rush through high volumes. A Rejuran session is many small injections, and you shouldn't leave the chair with your aftercare questions still unasked.
What do the first 24 hours feel like?
The injection itself is a series of small stings across the treated area, usually after numbing cream has had time to work. As soon as it's done, you'll see rows of small raised bumps, a bit like mosquito bites. That is the product sitting in the upper skin before it spreads out. Don't press or massage them flat; they settle on their own.
Across published studies of polynucleotide injections, the side effects reported were mostly mild and short-lived at the injection site, such as pain, redness and swelling (systematic review, Journal of Cosmetic Dermatology). For the first evening, expect bumps, a pink flush and a few pinpoint marks where the needle went in.
The usual advice for that evening:
- wash gently with lukewarm water and skip makeup until the next morning
- leave out alcohol that night
- skip hot baths, saunas and hard workouts
- sleep on your back if you can, so a treated cheek isn't pressed into the pillow
Rejuran recovery day by day, from the first evening to week four
| When | What you'll usually notice | What's usually fine |
|---|---|---|
| Treatment evening | Raised bumps, redness, pinpoint marks | Gentle wash, no makeup, early night |
| Day 1 | Bumps mostly flat, faint pink in places | Makeup, walking, sightseeing |
| Days 2β3 | Redness gone for most people; a bruise, if any, now shows clearly | Light exercise, still no sauna |
| Days 4β7 | Any bruise fades from purple to yellow | Normal routine, sauna again |
| Weeks 2β4 | Texture change starts to build | Next session, if a series is planned |
If you remember one thing about Rejuran recovery day by day, make it this: the bruise sets your schedule, the bumps don't. Thin skin bruises more easily, so the area under the eyes is where a bruise is most likely to show. If that's the area you have in mind, read what Rejuran under the eyes can and can't change. For crow's feet and the lid area there's a separate piece on Rejuran around the eyes.
The end of recovery is not the result. Polynucleotides are thought to work by supporting the skin's own repair processes (review in Pharmaceutics), so any change in texture builds over weeks and is usually judged across a course of sessions. That slower timeline is covered in what Rejuran results look like over a course.
How many days in Seoul should you plan?
For one session, plan at least two or three days in Seoul after the injection. You'll look fine on day one; the reason for the buffer is that if a bruise or a reaction shows up, you want to still be in town, where the doctor who treated you can look at it in person.
Mind the calendar. HERA is open Monday and Friday 10:00β20:00, Tuesday to Thursday 10:00β19:00 and Saturday 10:00β17:00, with lunch from 13:00 to 14:00, and closed on Sundays and public holidays. A Saturday-afternoon injection puts a closed day right after it.
Say you land at Incheon on a Thursday evening and fly home the following Tuesday. I'd put Rejuran on Friday. On Saturday you'd likely have a faint flush you can cover with makeup, Sunday is for sightseeing, Monday the clinic is open again if anything looks off, and on Tuesday you fly. If your trip is four days or fewer and the only open slot is the day before your flight, I'd rather save Rejuran for a longer visit.
Rejuran is commonly given as a series of sessions a few weeks apart. On a single trip you'd usually have one session, so ask whether one is worth it for your goal and how a second could fit a future trip.
Before you fly
cabin air is dry, so pack a plain moisturizer in your carry-on, and keep the injection off the day before departure.
How long each stage lasts differs between people, and the plan for your skin is set at the face-to-face consultation. HERA gives recovery guidance and follow-up in English, so distance doesn't cut you off. Once home, swelling that gets worse after day two, heat, increasing pain, pus or a firm lump still there after a week are reasons to see a local doctor promptly. Take the product name with you, and send a photo of the area to HERA on WhatsApp as well.
The treatment itself. If you want the clinical detail β who it suits, how a session runs, recovery and the honest limits β it is set out on our Rejuran page.
Visiting HERA in Gangnam
HERA is on the 4th floor of 9 Seocho-daero 73-gil, Seocho-gu, three minutes from Gangnam Station Exit 9. Consultations are by appointment, so message ahead and an English-speaking coordinator will be ready for you. The doctors' profiles and the treatment menu are on Gangnam HERA's English site.
Send a daylight photo of the area that bothers you most, under the eyes or across the cheeks, on WhatsApp, and ask whether one Rejuran session fits a trip of your length. At your consultation, the first thing I'd look at is how thin the skin is where you want the injection, because thin skin is where bruises show and where your extra days in Seoul matter.
FAQ
Frequently asked questions
Q1Can I wear makeup the morning after Rejuran?
Usually yes. By the next morning the puncture points have closed for most people, so light makeup is fine. Use a clean brush or sponge, because dirty applicators are a common route for infection in freshly injected skin, and leave out scrubs and exfoliating acids for a few days.Q2Can I fly the day after Rejuran?
Flying doesn't change how the product settles, and cabin pressure isn't a concern for a superficial injection like this. The reason to leave more time is practical: a bruise usually shows on day two or three, and you'd rather see it while you can still visit the clinic in person.Q3What if a bump is still there after three days?
Occasionally a bump lasts longer, often where the skin is thin or the product sat a little more superficially. Leave it alone rather than squeezing it. If it is firm, hot, painful or getting bigger, have a doctor look at it promptly, wherever you are.Q4Can I combine Rejuran with a laser on the same trip?
Often it's possible, but the order and spacing matter because both treat the same skin. Many doctors avoid putting a strong laser and an injection on the same patch on the same day. Ask about the order at your consultation, and build the longer recovery of the stronger treatment into your plan.Q5When can I go to a sauna or jjimjilbang again?
Most aftercare advice says to skip saunas, hot baths and hard workouts for about two to three days while redness and any swelling settle. From day four most people go back to their normal routine. Heat sooner than that can make redness and bruising last longer.
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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 Β· 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.
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HERA podcast ep. 3 β Dr. Kim and Dr. Lee look at the same face and explain the treatments they would choose, and why.
Dr. Jong Β· Dr. Jong - 8:07Lifting
What APTOS threads are, who they are recommended for, and a real patient's treatment and before-and-after.
Dr. Jong - 5:44Lifting
How APTOS compares with other lifting threads, what recovery is like and how long results last.
Dr. Jong Β· 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 β 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
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Dr. Jong - 5:56Lifting
Why lines form around the eyes, which treatments are combined, and Eye Thermage vs Eye Ulthera.
Dr. Jong - 4:58Lifting
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Shorts
One question, under a minute
HERA TV
The doctors explain it on camera β then in writing
Each piece is written by the doctor from their own YouTube video: the patient question, why it happens and how we approach it.
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A Gangnam plastic surgeon treats a young patient's two neck lines on camera β why the lines form, why they are filled slightly high at first, how much it hurts, and what the follow-up visit showed.
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5:39korean skin boosterKorean Skin Booster: How to Choose by Your Skin's Main Problem
There are so many Korean skin boosters that patients freeze. A Gangnam doctor sorts them by the four problems that matter β hydration, pores, inflammation and brightness β and names the one he would pick if he could only choose one.
Dr. Jong Seon Kim7 min read
HERA Journal
Keep reading
Skin boostersHow Long Does Rejuran Take? Chair Time, Bumps and Trip Days
A Rejuran visit usually takes half a day at most, and the small injection bumps typically flatten within one to three days. The full course takes longer: sessions are spaced two to four weeks apart.
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Skin boostersWhen Does Rejuran Start to Show? Bumps, Weeks and Your Flight
Rejuran's injection bumps usually settle in a day or two and hydration often shows within weeks, while texture changes build over a course. Dr. Jong Seon Kim on which day of your Seoul stay to book it.
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Skin boostersHow Long Does Rejuran Last? Months, Sessions and Trip Days
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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 β 7:00 PM; Monday, Friday: 10:00 AM β 8:00 PM; Saturday: 10:00 AM β 5:00 PM; Lunch break: 1:00 PM β 2:00 PM; Closed on Sundays and public holidays
