Rejuran in Korea: Benefits, Results, Cost and Recovery
Rejuran in Korea: Benefits, Results, Cost and Recovery
Introduction
Rejuran is one of the best-known injectable skin rejuvenation treatments in South Korea. It has become especially popular among patients looking for improvements in skin texture, elasticity, fine lines, hydration, and overall skin quality without adding the same type of facial volume associated with traditional dermal fillers.
The treatment uses polynucleotides (PN), purified DNA fragments commonly derived from salmon or trout sources. Rejuran is manufactured by PharmaResearch in South Korea and is widely used in Korean aesthetic dermatology. A survey of Korean dermatologists found injectable polynucleotide treatments to be a particularly popular type of skin booster in Korea.
Unlike conventional fillers, the primary objective of Rejuran is not to reshape the face. Instead, it is generally used as a skin-quality treatment intended to support hydration, elasticity, texture, and a more refreshed appearance.
For international patients visiting South Korea, understanding what Rejuran can realistically accomplish is important. While clinical research is promising, the evidence base is still developing, and results vary between individuals and treatment protocols. A 2025 systematic review found encouraging improvements in wrinkles, texture, and elasticity but also concluded that more high-quality research is needed.
What Is Rejuran?
Rejuran is an injectable polynucleotide treatment used primarily for skin rejuvenation.
Polynucleotides are chains of nucleotides derived from purified DNA. In aesthetic medicine, they are investigated for their potential role in supporting tissue remodeling and improving the condition of the skin.
Rejuran is different from a conventional hyaluronic acid dermal filler because its main purpose is not to create significant structural volume.
Instead, treatment may be considered for concerns such as:
- Fine lines
- Reduced skin elasticity
- Rough texture
- Dehydrated-looking skin
- Dull complexion
- Early signs of skin aging
- Certain delicate areas such as the periocular region
Research involving Rejuran and other polynucleotide treatments has reported improvements in several measures of skin quality, although studies vary in design, treatment technique, and patient population.
How Does Rejuran Work?
The proposed mechanism behind polynucleotide treatment is different from simply filling a wrinkle with a volumizing substance.
PNs have been investigated for their potential to support tissue remodeling, hydration, and fibroblast-related activity. Researchers propose that their physical and biological properties may help create an environment that supports skin repair and regeneration.
This is why Rejuran is often described in Korea as a regenerative skin treatment or skin booster.
However, patients should be careful with the word "regenerative." It does not mean that Rejuran can completely reverse aging or permanently rebuild damaged skin.
The available clinical evidence is promising but remains limited. The 2025 systematic review included nine studies involving 219 patients and rated the available evidence as generally low to moderate quality.
What Skin Concerns Can Rejuran Address?
Rejuran is primarily used for overall skin-quality concerns rather than major facial contouring.
It may be considered for:
- Fine lines
- Uneven skin texture
- Reduced elasticity
- Dehydration
- Dullness
- Early photoaging
- Periocular skin concerns
- General skin rejuvenation
The treatment may be particularly appealing to patients who want a subtle improvement rather than a dramatic change in facial shape.
It is important to understand that Rejuran is not designed to replace every dermatological treatment.
For significant pigmentation, deep acne scars, pronounced facial volume loss, severe skin laxity, or dynamic wrinkles, another treatment may be more appropriate.
Rejuran Benefits
The potential benefits of Rejuran depend on the individual and the treatment protocol.
Improved Skin Texture
One of the reasons patients consider Rejuran is to achieve smoother-looking skin.
Clinical research on polynucleotides has reported improvements in skin texture, although the available studies are relatively small.
Patients should expect gradual improvement rather than an instant resurfacing effect.
Better Skin Elasticity
Reduced elasticity is a common concern as skin ages.
Some studies of polynucleotide treatments have reported improvements in elasticity, supporting the use of PN as a skin-rejuvenation treatment.
The extent of improvement varies and depends on factors such as age, skin condition, treatment area, and number of sessions.
Hydration and Skin Quality
Rejuran may help improve the overall appearance and condition of skin that looks dry, tired, or less supple.
However, Rejuran should not be viewed simply as a replacement for a conventional hyaluronic acid skin booster. The products and mechanisms are different, even though both may be used for skin-quality concerns.
Fine-Line Improvement
Rejuran has been studied particularly in areas such as crow's feet and periocular skin.
Research involving Korean patients has evaluated Rejuran for wrinkles around the eyes, with studies reporting improvements in some measures of skin quality and wrinkle appearance.
The treatment is not expected to completely eliminate established wrinkles.
More Natural-Looking Rejuvenation
Because Rejuran is not primarily a volumizing filler, it generally does not aim to dramatically change facial proportions.
This can appeal to patients who want their skin to look healthier and more refreshed without noticeably changing the shape of their face.
Who Is a Good Candidate for Rejuran?
Rejuran may be considered for adults who want to improve overall skin quality rather than significantly change facial contours.
A consultation may be appropriate if you are concerned about:
- Early skin aging
- Fine lines
- Dullness
- Rough texture
- Reduced elasticity
- Dehydrated-looking skin
- Periocular skin quality
However, being interested in Rejuran does not automatically make someone a suitable candidate.
A medical professional should consider your skin condition, medical history, previous procedures, allergies, medications, and expectations before recommending treatment.
Patients with a specific skin disease or active infection may need treatment of that condition before undergoing an elective injectable procedure.
Rejuran vs Dermal Fillers
Rejuran and dermal fillers are both injectable treatments, but they have different primary purposes.
Dermal fillers are primarily used to add or restore volume and can be used for areas such as the lips, cheeks, chin, and jawline.
Rejuran is primarily focused on skin quality.
A simple way to think about the distinction is:
- Fillers: volume and contour
- Rejuran: skin quality and rejuvenation
A patient wanting stronger chin projection would generally need a treatment designed for structural volume.
A patient primarily concerned with fine lines, texture, or elasticity may be a candidate for Rejuran.
In some treatment plans, different procedures can be combined, but the decision should be based on the patient's actual concerns rather than adding treatments automatically.
Rejuran vs Hyaluronic Acid Skin Boosters
Both Rejuran and injectable hyaluronic acid skin boosters can be used to improve skin quality, but they are not identical.
Hyaluronic acid treatments generally focus heavily on hydration and skin-quality enhancement.
Rejuran uses polynucleotides and is positioned around skin rejuvenation and tissue-supporting properties.
The best option depends on the patient's skin concerns and the exact product being considered.
Patients should ask the clinic for the exact product name rather than choosing a treatment based only on the general term "skin booster."
What Happens During Rejuran Treatment?
The exact procedure varies according to the clinic, product, treatment area, and injection technique.
A typical appointment may include:
- Skin assessment and consultation
- Cleansing and preparation
- Application of topical anesthetic when appropriate
- Rejuran injection through multiple small injection points
- Cooling or basic post-treatment care
- Aftercare instructions
Because the product is commonly delivered through multiple small injections, tiny raised areas may be visible immediately after treatment.
A published clinical study involving Rejuran used a multiple-puncture technique and applied local anesthetic before treatment. The researchers also used cooling afterward to help with temporary swelling and bruising.
Does Rejuran Hurt?
Discomfort varies between patients and treatment areas.
Because Rejuran involves multiple injections, some degree of stinging, pressure, or tenderness can occur.
Clinics may use topical numbing cream before treatment to make the procedure more comfortable.
The eye area can be particularly sensitive.
If you are concerned about discomfort, discuss anesthesia and pain-control options with the clinic before your appointment.
Rejuran Recovery
Rejuran generally involves relatively limited downtime compared with surgical procedures, but visible injection effects are common immediately afterward.
You may experience:
- Small raised bumps
- Redness
- Mild swelling
- Bruising
- Tenderness
- Temporary itching
These effects are usually temporary.
A clinical study involving Rejuran reported transient local reactions such as edema, erythema, and itching, while other studies have also reported temporary irritation and redness.
Recovery varies depending on the treatment area and individual response.
Rejuran Recovery Timeline
Immediately After Treatment
Small bumps may be visible at injection points.
The skin can also look red or mildly swollen.
These effects are not necessarily a sign that anything has gone wrong.
First 24 Hours
Swelling and redness may remain noticeable.
Some patients may also develop small bruises.
A clinical Rejuran study instructed patients to avoid hot beverages, saunas, and baths on the treatment day and used cooling to help manage temporary reactions.
Several Days After Treatment
The small injection bumps generally become less noticeable as the skin settles.
Bruising can take longer to disappear.
Patients with important social events should therefore avoid scheduling treatment immediately before them.
Following Weeks
The desired skin-quality changes are generally gradual rather than immediate.
Patients may notice progressive changes in texture, hydration, or overall skin appearance as the treatment response develops.
How Many Rejuran Sessions Are Needed?
There is no single treatment schedule that applies to every patient.
Published studies have used multiple treatment sessions. For example, research summarized in a systematic review included protocols using three treatments at two-week intervals, while other studies used different schedules.
In Korean clinical practice, a provider may recommend a series of sessions followed by maintenance treatments depending on the patient's goals.
The appropriate number of treatments depends on:
- Skin condition
- Treatment area
- Product formulation
- Age
- Desired outcome
- Previous aesthetic treatments
- Individual response
Patients should ask for a complete treatment plan before purchasing a package.
When Will You See Rejuran Results?
Rejuran is not usually considered an instant-result treatment.
The initial appearance immediately after injection is largely influenced by the injections themselves, including temporary swelling.
The intended skin-quality changes develop gradually.
Clinical research has reported improvements at different follow-up points, with some studies observing outcomes several weeks or months after treatment.
This makes Rejuran different from treatments where the immediate physical effect is the primary result.
Patients should evaluate the treatment according to the timeframe explained by their provider rather than judging the outcome immediately after the appointment.
How Long Does Rejuran Last?
There is no universal duration for Rejuran results.
The available research uses different treatment schedules and follow-up periods, making it difficult to provide one guaranteed duration for every patient.
Results can also vary according to:
- Age
- Skin condition
- Lifestyle
- Sun exposure
- Treatment protocol
- Number of sessions
- Individual biological response
Maintenance treatments may be recommended when the effects gradually diminish.
A clinic should explain its maintenance recommendation rather than promising a fixed duration.
Rejuran Cost in Korea
The cost of Rejuran in Korea can vary substantially between clinics.
There is no single nationwide price because treatment costs may depend on:
- Rejuran product type
- Amount used
- Number of syringes
- Treatment area
- Number of sessions
- Doctor's experience
- Clinic location
- Whether anesthesia is included
- Whether aftercare is included
- Promotional packages
International patients should be especially careful when comparing prices.
A very low advertised price may represent a small amount of product or a limited treatment area rather than the full treatment plan.
Before booking, ask for the total cost and exactly what is included.
Rejuran Product Types
Patients may encounter different Rejuran formulations or treatment names at Korean clinics.
The appropriate formulation may depend on the area being treated and the desired outcome.
Instead of choosing a product solely because it is advertised as the "best Rejuran," ask the provider:
- Which Rejuran formulation are you recommending?
- Why is it suitable for my skin?
- How much product will be used?
- Which areas will be treated?
- How many sessions are recommended?
- What results should I realistically expect?
This makes it easier to compare clinics accurately.
Risks and Side Effects of Rejuran
Like other injectable treatments, Rejuran is not completely risk-free.
Common short-term effects may include:
- Swelling
- Redness
- Bruising
- Tenderness
- Itching
- Temporary injection-site bumps
The systematic review of polynucleotide treatments found that reported adverse effects were generally mild and transient, but the authors emphasized that available evidence is limited and that more rigorous research is needed.
Patients should not assume that a treatment marketed as "regenerative" or "natural" has no medical risks.
If you experience severe pain, significant skin discoloration, rapidly worsening swelling, signs of infection, or another unusual reaction, contact the treating medical provider promptly.
Is Rejuran Safe?
Current research suggests a generally favorable safety profile, but the evidence is still developing.
The systematic review found generally mild and temporary adverse effects across the available studies, but it also highlighted the low-to-moderate quality of much of the evidence and the lack of standardized treatment protocols.
Safety depends on more than the product itself.
Important factors include:
- Appropriate patient selection
- Product authenticity
- Injection technique
- Sterile practice
- Anatomical knowledge
- Appropriate treatment area
- Management of complications
This is particularly important for international patients who may be tempted to choose a clinic based only on online reviews or discounted prices.
Rejuran for International Patients in Korea
South Korea is an established destination for aesthetic dermatology, and Rejuran is closely associated with Korean skin-treatment culture.
For international patients, treatment planning should include more than choosing a clinic.
Before traveling, consider:
- How many sessions you need
- Whether all sessions can be completed during your stay
- How long visible swelling may last
- Whether a follow-up appointment is necessary
- Whether you need treatment records
- How soon you can fly after treatment
- Whether your travel insurance covers complications
If you are staying in Seoul or Busan for only a few days, a multi-session Rejuran plan may not be practical.
Ask the clinic about the recommended interval between sessions before purchasing a package.
How to Prepare for Rejuran
Your clinic should provide personalized instructions, but general preparation may include discussing:
- Current medications
- Supplements
- Allergies
- Previous injectable treatments
- Previous adverse reactions
- Active skin conditions
- Recent cosmetic procedures
Do not stop prescription medication without discussing it with the appropriate healthcare professional.
If you have an active infection or significant skin irritation in the intended treatment area, inform the clinic before proceeding.
Rejuran Aftercare Tips
After treatment, follow the specific instructions provided by your medical provider.
Common practical precautions may include:
- Avoid unnecessary touching of the treated area
- Follow cleansing instructions from the clinic
- Avoid excessive heat immediately after treatment
- Avoid saunas and very hot baths when advised
- Avoid strenuous activity for the period recommended by your provider
- Use sun protection
- Avoid introducing new irritating skincare products immediately after treatment
- Do not massage the treated area unless instructed
A published Rejuran clinical study specifically advised patients to avoid hot beverages, saunas, and baths on the day of treatment.
Is Rejuran Good for Acne Scars?
Rejuran may be considered in some skin-rejuvenation plans, but it should not be presented as a universal acne-scar treatment.
Acne scars have different forms, including:
- Rolling scars
- Boxcar scars
- Ice-pick scars
- Post-inflammatory pigmentation
Different scar types may respond differently to procedures such as subcision, laser resurfacing, microneedling, radiofrequency microneedling, or other treatments.
Polynucleotides are being investigated for scar remodeling, but the evidence remains developing.
A dermatologist should assess the scar type before recommending Rejuran.
Is Rejuran a Filler?
Rejuran is an injectable treatment, but it should not be confused with a conventional volumizing dermal filler.
Traditional fillers are designed primarily to add volume and modify contours.
Rejuran is generally used as a skin-quality treatment.
Although certain PN formulations may have physical properties that provide some tissue support, the primary goal of typical Rejuran skin rejuvenation is not to create dramatic facial volume.
Common Mistakes to Avoid
Expecting Instant Transformation
Rejuran is generally intended to produce gradual skin-quality improvements.
Assuming Every Clinic Uses the Same Protocol
Injection technique, dosage, treatment intervals, and product selection can vary.
Choosing Only by Price
The cheapest package is not necessarily the best option.
Booking Immediately Before an Event
Temporary bumps, redness, swelling, or bruising can occur.
Confusing Rejuran With a Filler
The two treatments have different primary purposes.
Expecting It to Solve Every Skin Problem
Pigmentation, severe acne scarring, deep wrinkles, and significant laxity may require different approaches.
Frequently Asked Questions
What is Rejuran in Korea?
Rejuran is an injectable polynucleotide skin treatment manufactured in South Korea and commonly used for skin rejuvenation. It is primarily intended to improve skin quality rather than create significant facial volume.
What are the main benefits of Rejuran?
Potential benefits include improvements in skin texture, elasticity, fine lines, hydration, and overall skin quality. Research is promising, but the available evidence remains limited.
How many Rejuran treatments do I need?
Many protocols use multiple sessions, but the exact number depends on the product, treatment area, skin condition, and treatment goals. Published studies have used different schedules, including three-session protocols.
Is Rejuran painful?
Some discomfort is possible because Rejuran is delivered through multiple injections. Clinics may use topical anesthetic to improve comfort.
How long does Rejuran recovery take?
Most patients experience temporary injection-site effects such as redness, swelling, bumps, or bruising. The visible recovery period varies between individuals and treatment areas.
When will I see Rejuran results?
Results are generally gradual. Clinical studies have assessed improvements at several weeks and months after treatment, rather than relying solely on immediate post-treatment appearance.
Does Rejuran add facial volume?
Rejuran is primarily a skin-quality treatment rather than a conventional volumizing filler. It is not generally selected when the main goal is substantial cheek, chin, or lip augmentation.
Can Rejuran be combined with other treatments?
It may be incorporated into a broader aesthetic treatment plan, but combinations should be determined by a qualified medical professional based on your skin condition and treatment goals.
Is Rejuran safe for international patients?
Rejuran has a generally favorable safety profile in available studies, but it is still an injectable medical treatment. Patients should choose an appropriate medical clinic and disclose their medical history and previous procedures.
Can I get Rejuran during a short trip to Korea?
You can potentially receive a session during a short trip, but some treatment plans require multiple sessions separated by weeks. Ask the clinic about the complete schedule before traveling.
Conclusion
Rejuran has become an important part of the Korean skin-rejuvenation landscape, particularly for patients who want to improve skin quality without significantly changing facial contours.
Its polynucleotide formulation distinguishes it from conventional dermal fillers and many other skin boosters. Research has reported promising improvements in wrinkles, texture, elasticity, and other measures of skin quality, while generally describing temporary and manageable side effects. However, the evidence base is still relatively small, and researchers continue to call for larger, higher-quality studies and more standardized treatment protocols.
For patients considering Rejuran in Korea, realistic expectations are essential. The treatment is not a permanent solution for aging, and it should not be expected to erase deep wrinkles, dramatically tighten loose skin, or replace treatments designed specifically for pigmentation, severe acne scars, or facial volume loss.
The best candidates are generally those looking for gradual improvements in skin quality, texture, elasticity, hydration, and fine lines.
If you are traveling to South Korea for treatment, compare clinics based on medical expertise, product authenticity, treatment planning, aftercare, and communication—not simply promotional pricing. Ask which Rejuran formulation will be used, how many sessions are recommended, what recovery to expect, and whether follow-up can be arranged before you leave Korea.
With an appropriate medical assessment and realistic expectations, Rejuran can be considered as one option within a broader approach to skin rejuvenation in South Korea.
