Complete Guide to Rejuran Treatment: Benefits, Effects & Recovery

Rejuran treatment benefits come from a simple idea: instead of just filling or freezing the skin, Rejuran helps the skin repair and rebuild itself. Rejuran is a skin-regeneration injection that uses polynucleotides (PN) — purified DNA fragments from salmon — to switch on the skin’s own repair process, boosting collagen, elasticity and hydration over time. Unlike Botox or fillers that work right away but fade, the main Rejuran treatment benefits build up gradually and look natural, which is why it has become a go-to choice for people who want healthier skin rather than an obvious “done” look.

This guide focuses on what Rejuran actually does for your skin — the real benefits, when results appear, how long they last, and how to get the most from each session. If you want the step-by-step injection process, downtime and pricing instead, see our complete Rejuran procedure and recovery guide.

What is Rejuran?

Rejuran is a skin regeneration treatment that uses polynucleotides (PN) extracted from salmon DNA as its main ingredient. The name “Rejuran” combines “Rejuvenation” and “Salmon,” literally meaning “making skin younger with salmon components.”

Definition and Components of Rejuran

The key component of Rejuran, polynucleotide (PN), is extracted from salmon sperm DNA. This substance has a structure similar to human DNA, resulting in excellent biocompatibility. This component promotes skin cell regeneration and repair, offering outstanding skin regeneration effects.

Rejuran has been officially approved by regulatory authorities as a medical device for skin regeneration, with verified safety in clinical applications.

Types of Rejuran Treatments

Rejuran is available in several varieties:

• Rejuran Healer: The basic product focusing on skin regeneration
• Rejuran Eye: Specialized for improving eye wrinkles and dark circles
• Rejuran S: Rejuran Healer with additional skin improvement ingredients
• Rejuran I: Low-irritation product developed for sensitive skin
• Shotgun Rejuran: A technique that delivers treatment deeper than standard Rejuran injections

Each type offers different effects and is suitable for specific areas. Consulting with a specialist to select the appropriate product based on your skin condition and goals is crucial.

How Rejuran Treatment Works

The effects of Rejuran treatment extend beyond simply injecting ingredients; they work because polynucleotides actively talk to your skin cells and wake up the body’s own repair program. Here is the chain of events, in plain language.

Researchers have shown that the polynucleotides in Rejuran act like a “start” signal for skin repair. They attach to a specific docking point on skin cells called the A2A adenosine receptor — think of it as an on-switch for regeneration. Once that switch is flipped, the skin releases natural growth factors, forms tiny new blood vessels that improve circulation, and calms inflammation. The result is a healthier environment in which damaged skin can rebuild itself, and published studies note this happens with very few side effects.

Skin Regeneration Action of Polynucleotides (PN)

Polynucleotides contribute to skin regeneration in the following ways:

1. Cell Proliferation Promotion: PN stimulates skin cell growth and division, replacing damaged cells with new ones.
2. Antioxidant Action: Protects cells from free radicals, delaying aging.
3. Inflammation Reduction: Reduces inflammatory responses, alleviating skin irritation.
4. Skin Barrier Strengthening: Enhances the skin’s defensive function, increasing resistance to external stimuli.

According to the American Academy of Dermatology, PN components activate skin cell metabolism and promote the repair of damaged cells.

Collagen and Elastin Production Mechanism

The most notable treatment effect of Rejuran is its ability to stimulate collagen and elastin production:

• Collagen Production: PN stimulates skin cells (fibroblasts) to increase collagen production. Collagen is a key protein that maintains skin firmness and strength.
• Elastin Regeneration: Elastin is a protein responsible for skin elasticity, and Rejuran promotes its production.
• Hyaluronic Acid Production: Increases the natural production of hyaluronic acid, which maintains skin moisture.

The key players here are fibroblasts — the skin’s collagen-making cells. Laboratory studies show that polynucleotides encourage these cells to multiply and work harder, so the skin produces more of its own collagen and elastin rather than relying on a filler. Because the skin is genuinely rebuilding its support structure, these skin regeneration effects are cumulative and keep improving for weeks after each session.

Key Rejuran Treatment Benefits for Your Skin

The everyday Rejuran treatment benefits people notice fall into a few clear groups — firmer skin, better hydration, brighter tone, and smoother texture. It offers effective help for many skin issues, with especially strong improvement for age-related changes. If you are weighing your options, our Juvelook vs Rejuran comparison breaks down how it differs from similar skin boosters.

Skin Elasticity and Wrinkle Improvement

The most representative effect of Rejuran is wrinkle improvement:

• Fine Line Reduction: Softens expression lines and eye wrinkles.
• Skin Elasticity Restoration: Restores firmness to sagging skin, and is particularly effective for improving cheek and jawline elasticity.
• Neck Wrinkle Improvement: Also effective for horizontal neck wrinkles.

Skin Hydration and Moisture Retention

Rejuran doesn’t simply supply moisture but enhances the skin’s ability to retain moisture:

• Improved Moisture Binding Capacity: Enhances skin cells’ ability to bind moisture, maintaining hydration for longer periods.
• Dryness Improvement: Transforms dry, rough skin into soft, supple skin.
• Skin Barrier Strengthening: Improves skin barrier function that prevents moisture evaporation.

Skin Tone and Complexion Improvement

Rejuran improves overall skin tone and complexion through skin cell activation:

• Blood Circulation Promotion: Improves skin microcirculation, brightening complexion.
• Improved Skin Clarity: Creates clearer, more translucent skin.
• Redness Reduction: Decreases inflammation-induced redness.

Pore and Skin Texture Improvement

Improvements related to refined skin texture can also be expected:

• Pore Reduction: Gradually shrinks enlarged pores.
• Skin Texture Improvement: Rough skin texture becomes smoother.
• Scar Reduction: Helps improve mild acne scars and wound scars.

Mineclinic’s Rejuran treatment provides a customized approach to comprehensively improve these various skin concerns.

When Do Rejuran Treatment Results Appear?

Many people wonder about the timing of Rejuran effects, so let’s explore this timeline. The short answer: hydration improves within the first week or two, while the firming, collagen-driven Rejuran treatment benefits appear gradually over two to six months.

Difference Between Initial and Long-term Effects

Rejuran treatment effects appear in two main phases:

Initial Effects (Immediately after treatment~2 weeks)

• Immediately after treatment: Temporary moisture and volume sensation from the injection.
• 1-3 days: Slight swelling or bruising may occur, which is a natural process.
• 1 week: Skin moisture improves and begins to soften.
• 2 weeks: Mild skin texture improvement and moisturization becomes noticeable.

Long-term Effects (After 2 weeks~6 months)

• 2-4 weeks: Skin elasticity gradually begins to improve.
• 1-2 months: Fine wrinkles decrease and skin tone brightens.
• 2-3 months: Collagen production becomes active, noticeably improving skin elasticity.
• 3-6 months: Skin regeneration effects are maximized, improving overall skin condition.

A significant characteristic of Rejuran is that results improve over time. This is because Rejuran doesn’t provide temporary effects but enhances the skin’s regenerative abilities.

Individual Variation Factors

The timing and degree of Rejuran treatment effects may vary by individual:

• Age: Generally, younger age groups may see faster results.
• Skin Condition: Severe existing skin damage may take longer to show effects.
• Lifestyle Habits: Smoking, alcohol consumption, sleep deprivation, and stress can delay results.
• UV Exposure: Excessive UV exposure can reduce Rejuran’s effectiveness.
• Number of Treatments: Whether the recommended number of treatments (usually 2-4) has been completed is important.

How Long Do Rejuran Results Last?

Duration of Effects Based on Treatment Frequency

The duration of Rejuran treatment effects is closely related to the number of treatments:

• Single treatment: Effects last about 2-3 months.
• 2-3 treatments: Effects maintain for 4-6 months.
• 4+ treatments: Effects can last from 6 months up to a year.

For effective results, 3-4 treatments at 2-4 week intervals are generally recommended. Afterward, additional maintenance treatments every 3-6 months are advisable.

Optimal Treatment Intervals and Maintenance

The recommended schedule for maintaining optimal Rejuran treatment results is as follows:

Initial Treatment Phase

1. 1st treatment: Basic procedure
2. 2nd treatment: 2-4 weeks after the 1st
3. 3rd treatment: 2-4 weeks after the 2nd
4. 4th treatment: 2-4 weeks after the 3rd

Maintenance Phase

• One treatment every 3-6 months to maintain effects
• Intervals adjusted based on individual skin condition and age

This systematic approach is also emphasized in mineclinic’s anti-aging program and represents the optimal method for long-term skin health.

How to Maximize Rejuran Treatment Results

To maximize the effects of Rejuran treatment, not only the procedure itself but also pre and post-care and lifestyle habits are important.

Pre and Post-Treatment Care

Pre-Treatment Preparation

• Avoid alcohol consumption and smoking for one week before treatment.
• Discontinue medications that interfere with blood circulation, such as aspirin and ibuprofen (consult with your doctor).
• Stop using skincare products with irritating ingredients like retinol, AHA, and BHA three days before treatment.
• Arrive without makeup on the day of treatment.

Post-Treatment Care

• Refrain from washing your face for 24 hours after treatment, and afterward use a gentle cleanser.
• Avoid high-temperature environments like saunas, steam rooms, and hot showers for three days after treatment.
• Avoid strenuous exercise for one week.
• Do not excessively massage or stimulate the treated area.
• Sun protection is essential! Apply sunscreen with SPF 50 or higher thoroughly.
• Stay well-hydrated to support skin regeneration.

Detailed post-treatment care instructions can be found on mineclinic’s aftercare guide.

Lifestyle and Dietary Factors

Lifestyle habits to maximize and maintain Rejuran treatment effects:

• Balanced Diet: Consume plenty of fruits and vegetables rich in antioxidants, fish rich in omega-3 fatty acids, and protein that helps collagen production.
• Adequate Hydration: Drink more than 2 liters of water daily.
• Sufficient Sleep: 7-8 hours of quality sleep is essential for skin regeneration.
• Sun Protection: Use sunscreen with SPF 30 or higher daily and avoid direct sunlight.
• Stress Management: Manage stress through meditation, yoga, and adequate rest.
• Quit Smoking: Smoking is a major cause of collagen destruction and reduced blood circulation.
• Appropriate Skincare: Maintain a gentle skincare routine centered on moisturization.

Rejuran Treatment Case Studies

Age-Related Effectiveness Differences

Rejuran treatment tends to show different effects depending on age group:

Early 20s-Early 30s

• Preventive effects are predominant.
• Skin tone and texture improve, and elasticity increases.
• Prevents early signs of aging.
• Strengthened skin barrier reduces the occurrence of skin troubles.

Late 30s-40s

• Fine line and micro-wrinkle improvement effects are prominent.
• Skin elasticity restoration is noticeably visible.
• Pore reduction and skin texture improvement effects occur.
• Overall skin vitality increases.

50 and Above

• Deep wrinkle alleviation effects can be observed.
• Sagging skin gains elasticity.
• Skin regeneration rate increases, improving recovery.
• Overall skin texture and tone improve.

Area-Specific Effectiveness Differences

Rejuran shows various effects depending on the application area:

Full Face

• Overall increased skin elasticity
• Complexion improvement and skin tone equalization
• Fine line reduction

Eye Area (Crow’s Feet)

• Eye wrinkle alleviation
• Under-eye elasticity improvement
• Dark circle reduction (when using Rejuran Eye)

Neck Area

• Horizontal wrinkle improvement
• Neck skin elasticity strengthening
• Sagging skin improvement

Décolletage Area

• Recovery from UV-damaged skin
• Fine line reduction
• Skin tone improvement

Back of Hands

• Improvement of rough, thinning skin
• Wrinkle reduction and elasticity increase
• Reduction of prominent veins

Mineclinic provides customized Rejuran treatments for each area to achieve optimal results.

What to Know Before Getting Rejuran

Treatment Suitability Criteria

Like all procedures, Rejuran isn’t suitable for everyone. Check these criteria:

Suitable for Rejuran Treatment

• Those concerned about decreased skin elasticity and wrinkles
• Those wanting natural improvement through skin regeneration
• Dry skin with reduced moisturizing ability
• Photoaged skin from sun exposure
• Those wanting continuous skin management

Cases to Avoid Treatment

• Pregnant or breastfeeding women
• Those with immune disorders
• Those with active infections in the treatment area
• Those with allergies to Rejuran components
• Those with blood coagulation disorders
• Those who have recently received other skin treatments (possible after a certain period)

What to Discuss with Your Specialist

Be sure to discuss the following with your specialist before treatment:

1. Current Medications: Blood thinners, anti-inflammatories, etc. may need adjustment before treatment.
2. Previous Skin Treatment History: Inform about recent fillers, Botox, laser treatments, etc.
3. Skin Allergy History: Particularly check if you have allergies to local anesthetics like lidocaine.
4. Personal Skin Concerns: Specifically discuss the areas you want to improve.
5. Expected Results: Setting realistic expectations is important.
6. Lifestyle Factors: Discuss occupation, daily activities, and recovery time availability.

Schedule a consultation appointment at mineclinic for a personalized 1:1 consultation with a specialist.

Frequently Asked Questions

How Painful is Rejuran Treatment?

What is the pain level of Rejuran treatment?

Rejuran treatment may cause some pain as it uses fine needles. However, most clinics minimize pain by applying local anesthetic cream or providing sedatives before treatment. Many patients rate the pain as 3-4 on a scale of 1 to 10, describing it as tolerable.

Pain levels can vary depending on the treatment method, with Shotgun Rejuran being less painful than regular injections. There may be slight stinging or discomfort after treatment, but this usually disappears within 24 hours.

What’s the Difference Between Rejuran and Other Skin Regeneration Treatments?

I’m curious about how Rejuran differs from other treatments such as fillers, Botox, and HIFU.

Rejuran differs from other common anti-aging treatments in the following ways:

• vs. Fillers: Fillers provide immediate volume improvement but are temporary. Rejuran induces the skin’s own regeneration, creating natural improvement effects that appear gradually and last longer.
• vs. Botox: Botox reduces wrinkles by inhibiting muscle activity, while Rejuran improves skin quality itself through cell regeneration.
• vs. Laser Treatments: Lasers induce skin regeneration through thermal energy and require recovery time. Rejuran has almost no downtime and promotes a more natural regeneration process.
• vs. Thread Lifting: Thread lifting focuses on immediate lifting effects. Rejuran gradually improves skin texture and elasticity.
• vs. HIFU: HIFU effectively lifts deeper layers using ultrasound energy, while Rejuran focuses on overall health improvement of the epidermis and dermis.

Visit mineclinic’s skin regeneration treatment summary page to compare the characteristics and differences of each treatment in detail.

When Can I Resume Daily Activities After Rejuran Treatment?

I’m curious about recovery time and when I can return to daily life after Rejuran treatment.

One of Rejuran’s major advantages is that it has almost no downtime. Most patients can return to daily activities immediately after treatment. However, temporary effects may include:

• Minor swelling and bruising: May last 1-3 days and can be covered with light makeup.
• Redness: The injection site may become slightly red but usually disappears within 24 hours.
• Pain/discomfort: Mild pain or tightness may occur but is generally tolerable without painkillers.

The following activities should be resumed after waiting:

• Makeup: Possible after 24 hours
• Intense exercise: Possible after 2-3 days
• Saunas, steam rooms: Possible after 1 week
• Alcohol consumption: Possible after 1-2 days (however, excessive drinking should be avoided)

What is Rejuran and what is it made of?

Rejuran is an injectable skin booster based on polynucleotide (PN) extracted and purified from salmon DNA. It is used to support the skin’s own repair processes and elasticity rather than to add volume, so it is grouped with regenerative skin boosters rather than with fillers.

How many sessions are usually needed, and at what interval?

A course of several sessions spaced roughly two to four weeks apart is common, followed by maintenance sessions at longer intervals. The number of sessions depends on skin condition, age and the concern being treated, and is determined by the treating doctor.

What downtime should be expected after Rejuran?

Small injection bumps, redness and mild swelling are common during the first one to three days and usually settle without treatment. Responses vary between individuals; swelling, pain or discoloration that persists should be reported to the clinic.

Conclusion

Rejuran treatment goes beyond simple cosmetic procedures to activate the skin’s inherent regenerative abilities, offering a fundamental anti-aging solution. The value of Rejuran treatment effects lies in creating natural, healthy skin changes that improve over time, rather than temporary improvements.

If you’re concerned about various signs of aging such as decreased skin elasticity, wrinkles, dryness, or dull complexion, consider Rejuran treatment. Rejuran can be an excellent choice, especially for those seeking natural improvement.

Since skin conditions and concerns vary by individual, a customized approach through consultation with a specialist is important for optimal results. Mineclinic, located in Seoul, offers personalized Rejuran programs suited to individual skin conditions and goals.

Your skin reflects your health and confidence. Experience a healthier, more radiant you with Rejuran, starting from deep within your skin. For more information or professional consultation, find your optimal solution through a 1:1 personalized consultation with a specialist at mineclinic.