Quick answer: Rejuran Healer is a Korean skin booster made of polynucleotides (PN) derived from salmon DNA. Injected into the dermis, it supports skin repair, improving texture, elasticity, fine lines and redness. Most people need 2 to 3 sessions about 4 weeks apart. Expect small bumps for 1 to 3 days. A single session in Busan typically costs about ₩150,000 to ₩400,000.
How Rejuran works
Polynucleotides act as building blocks that support the skin's natural repair processes and create a better environment for collagen production. Rather than adding volume like fillers, Rejuran gradually strengthens and calms the skin.
Benefits
- Smoother, more even texture.
- Improved elasticity and firmness.
- Fewer fine lines and crepey areas.
- Calmer, less reactive skin and reduced redness.
- Support for skin recovering from lasers or acne.
Rejuran product family
- Rejuran Healer: the standard full-face booster.
- Rejuran Eye: a gentler formula for the thin under-eye skin.
- Rejuran S: a thicker version used for acne scars.
- Rejuran HB: includes hyaluronic acid and lidocaine for comfort.
What to expect
- Numbing cream for 30 to 40 minutes.
- Many small injections by hand or with an injector device.
- Small bumps across the treated area, fading within 1 to 3 days.
Results timeline
Hydration and glow often improve within 1 to 2 weeks. Texture and elasticity improve more noticeably after the second or third session and can last several months.
Side effects
- Injection bumps and redness.
- Pinpoint bruising.
- Discomfort during injection, as Rejuran is known to sting.
- Rarely, allergic reaction in those sensitive to fish proteins.
Aftercare
- No makeup until the next morning.
- Avoid saunas, alcohol and intense exercise for 24 hours.
- Use gentle skincare and SPF 50.
What makes Rejuran different from other boosters
Most hydrating boosters rely on hyaluronic acid to attract water. Rejuran instead uses polynucleotides, which support the skin's repair environment, making it a popular choice for thin, damaged or sensitive skin and for recovery after lasers. Results are less about instant plumpness and more about gradual improvements in elasticity, texture and calmness.
Who benefits most
- People with dull, tired or thin skin.
- Those with sensitive or redness-prone skin.
- Patients recovering from lasers or acne.
- Anyone with early fine lines who prefers a natural, gradual change.
Hand injection vs injector devices
Rejuran can be injected by hand with a fine needle or delivered through an automated injector that places many small, even droplets. Hand injection allows targeted placement in specific areas, while injector devices can be quicker and more uniform. Ask which method the clinic uses and whether it affects comfort and bumps.
Typical course and maintenance
A common plan is three sessions spaced two to four weeks apart, followed by maintenance every three to six months. Combining Rejuran with laser toning or lifting devices is common in Korea.
How to minimise bumps and discomfort
- Allow numbing cream enough time to work.
- Ask about Rejuran HB, which contains lidocaine.
- Avoid alcohol before and after treatment to reduce bruising.
- Apply a cool compress after treatment if allowed.
Planning Rejuran during a trip to Busan
Small bumps last one to three days and may be visible without makeup, so schedule it early in your trip. A course of three sessions gives the best result, so plan the first session in Busan and continue at home if needed. Most international visitors stay in Seomyeon, the city's largest clinic district and a central subway hub, or in Haeundae and Centum City near the beach. Seomyeon is about 35 minutes from Gimhae International Airport by light rail and subway and about 12 minutes from Busan Station (KTX) on Line 1, while Haeundae is about 30 to 40 minutes further east on Line 2. Book your consultation before you arrive, share your travel dates with the clinic, and leave at least one buffer day before your flight in case you want a follow-up check.
Questions to ask at your consultation
- Which Rejuran product will you use, and how much?
- Do you inject by hand or with a device?
- How many sessions do you recommend for my skin?
- Is the clinic registered with HIRA, and who will perform the treatment?
- Does the written quote include VAT, numbing cream and any follow-up visit?
- How can I contact the clinic with questions after I return home?
How to choose a clinic for Rejuran in Busan
Busan has roughly 1,000 registered clinics across dermatology, plastic surgery and other specialties, so it is worth comparing a few before you book. Start by checking that the clinic is listed with Korea's Health Insurance Review and Assessment Service (HIRA), then look at the doctor's specialty and experience with Rejuran. In Korea, a clinic name that includes "Dermatology" (피부과) or "Plastic Surgery" (성형외과) indicates the director is a board-certified specialist in that field. During consultation, a good clinic will explain realistic results, side effects and alternatives, give you a written quote, and never pressure you into same-day packages. Read recent patient reviews with a critical eye, and favour clinics that provide English aftercare instructions and a clear way to contact them after you leave Korea.
Frequently asked questions
Does Rejuran hurt?
It is one of the more uncomfortable boosters, but numbing cream and versions with lidocaine help.
Can I get Rejuran on a short trip?
Yes, but schedule it early so bumps settle before you fly.
Can it be combined with lasers?
Yes, it is commonly paired with laser toning or lifting treatments.
This article is for general information only and is not medical advice. Figures and prices are indicative and may change; always confirm details with a licensed physician and request a written quote before any procedure.
