Rejuran in Korea is a polynucleotide (PN) injection made by the Korean company Pharma Research, placed as hundreds of tiny deposits in the upper skin to support texture and elasticity over a course rather than in one visit. It is PN, not PDRN, and it adds no volume. For someone living in Seoul for a semester or a working holiday, the main advantage is time: sessions can be spaced the way the treating doctor plans instead of being squeezed into one trip. Expect raised bumps for one to three days, a stinging sensation during injection even with numbing cream, and gradual change that shows over weeks. Results vary from person to person.
Guide
What a PN course can realistically change in skin under 35
Skin in its twenties and early thirties usually has good collagen and little sagging, so the gains from Rejuran are quiet ones. People in this age group mostly report a finer surface, less of the crepey look that comes with dehydration, and makeup that sits more evenly. Deep pitted scars, enlarged pores from oil, active acne and any loss of contour need other treatments, and a doctor should say so at the first visit.
The product is a purified PN solution of about 20 mg per mL. A 2021 consensus report by Cavallini and colleagues in the Journal of Cosmetic Dermatology describes highly purified polynucleotides as a biostimulatory booster used to prime and revitalize skin, and it sets out injection technique, volumes and session intervals by body area. That framing fits younger skin well: the goal is condition, not correction.
- Reasonable goals: smoother feel, more even surface, skin that holds moisture longer
- Unrealistic goals: lifting, filling hollows, removing deep scars, shrinking oily pores
- Typical effect span quoted for the Healer line: about four to six months
Guide
Spacing sessions over a semester or a working-holiday visa
Short-trip visitors often try to fit two sessions into one week, which leaves little room for the skin to settle. A longer stay removes that pressure. The usual pattern is a series of sessions with an interval of roughly one to several weeks between them, and the doctor sets both the count and the gap after looking at the skin. A spaced Korea Rejuran plan differs from a rejuran korea injection squeezed into a holiday, and a rejuran treatment seoul schedule can follow the skin instead of the flight. Write the planned dates down at the first consultation.
Bumps from the 200 to 300 micro-injection points flatten within a few days for most people, so a weekday morning appointment followed by a quiet evening suits most schedules.
| Situation | How to plan sessions | What to keep clear |
|---|---|---|
| Exchange semester | Spread the course across the term, ending well before departure | Exam weeks and the final flight home |
| Working holiday | Book on a day off with the next day free if possible | Late shifts in hot kitchens or saunas |
| Remote worker | Pair sessions with lighter video-call days | Camera-heavy days right after treatment |
Guide
How much the injections sting
Numbing cream reduces the sharp part, but many people still feel a stinging or pressure sensation. A 2025 randomized, patient-blinded split-face study by Jeon and colleagues in Aesthetic Plastic Surgery compared a conventional PN filler with an ionization-adjusted PN version in 15 participants. In that Jeon study, pain on a 10-point scale averaged 5.04 on the conventional side and 3.39 on the adjusted side, and Jeon and colleagues recorded embossing in 56.7% versus 13.3% of cases.
Both sides improved similarly on wrinkle scales. The practical point is that discomfort is a known part of PN treatment, formulations differ, and asking which product version will be used is a fair question.
Guide
Side effects and reasons to postpone
Expected effects are raised bumps, redness, mild swelling and pinpoint bruising for a few days. Less common are small lumps that last longer, infection at injection points and allergic reaction. Because PN is derived from fish DNA, a known fish allergy needs to be mentioned before anything is injected.
Postpone treatment during pregnancy or breastfeeding, with active acne, cold sores or eczema on the face, or while taking blood thinners the doctor has not reviewed. Results are gradual and not permanent, and a course that is stopped halfway may show little.
Evidence
Research behind this page
- Efficacy of Ionization-Adjusted PN Filler in Minimizing Injection Pain: A Randomized, Patient-Blinded, Split-Face StudyAesthetic Plastic Surgery · 2025 · doi:10.1007/s00266-025-05320-x
In 15 participants, an ionization-adjusted PN filler produced lower injection pain and less embossing than a conventional PN filler, with similar wrinkle improvement on both sides.
- Consensus report on the use of PN‐HPT™ (polynucleotides highly purified technology) in aesthetic medicineJournal of Cosmetic Dermatology · 2021 · doi:10.1111/jocd.13679
An expert panel reached consensus recommendations on technique, dosage, volumes, session numbers and intervals for highly purified polynucleotides across face and body areas.
FAQ
Questions about Skin boosters in Hongdae
Is Rejuran worth trying in my twenties?
It can be, if the goal is surface quality such as dryness, fine crepey lines or uneven texture rather than lifting. Younger skin starts from a good baseline, so changes tend to be subtle and build over several sessions. If the consultation cannot name a specific goal for your skin, waiting is a reasonable choice.
Can I go out in Hongdae the evening after a rejuran injection in Korea?
A quiet dinner is usually fine, but a long night of drinking, dancing and heat is better left for a few days. Alcohol and warm crowded rooms can make swelling and redness last longer, and the bumps are often still visible that evening. Booking on a weekday keeps the weekend free.
How do I find a rejuran seoul clinic that explains the plan clearly?
Look for a clinic that writes down the product name, the amount per session, the number of sessions and the interval before treating. Each clinic card on this site shows the basic details you can compare. In the consultation, ask who injects, whether numbing cream is included and what aftercare instructions you will receive in writing.
Does Rejuran help with marks left by old breakouts?
It may soften shallow, rough texture a little, but it is not a scar treatment on its own. Deep rolling or pitted scars usually need procedures that remodel tissue, such as laser or microneedling, and the doctor may combine approaches. Active acne should be calm before PN is injected, because inflamed skin raises the risk of irritation and infection. Ask for an honest estimate for your specific scars.
Can I start a course in Seoul and finish it in my home country?
Sometimes, if the same product is available at home and a local doctor agrees to continue the plan. Ask the Korean clinic for a written note with the product, amounts and dates of each session. Without that record the next doctor may restart the course. Finishing the course before leaving keeps intervals consistent.
How should I read a rejuran treatment korea post on social media?
Treat it as one person's experience, not a forecast. Whether it is tagged rejuran #korea or written up as a long rejuran korea review, a post rarely says how many sessions or how much product were involved. Results vary with age, skin type and aftercare. A useful habit is to note the questions a post raises and bring them to the consultation instead of comparing your face with someone else's.