What Is Rejuran? A Complete Guide to Effects, Downtime, and Precautions
Rejuran is a skin booster treatment that injects PN (polynucleotide) into the skin to help improve skin condition and texture. Downtime varies by individual, but mild redness and slight swelling are common from the day of treatment up to about 3 days, gradually subsiding afterward. Since soothing and moisturizing home care in the days following the treatment can significantly affect the results, it's important to know the care steps in advance.
What Is Rejuran? How Does It Work?
Rejuran is a skin booster treatment that involves micro-injecting salmon-derived PN (polynucleotide) into the dermis. It's known by various names such as Rejuran, Rejuran Healer, Juvelook, and Revive, but they all share the common goal of helping to improve the skin's own condition and texture.
The procedure involves injecting small amounts multiple times into the superficial to dermal layers of the skin using a fine needle or cannula, which is a different approach from lifting treatments that use heat energy. As a result, the immediate reactions and recovery process also differ from those of lifting treatments.
The degree of reaction can vary depending on the treatment area, the product used, and individual skin condition, so the exact treatment method and number of sessions should always be determined through consultation with a medical professional.
Reactions That May Occur Right After Rejuran
Right after the treatment, mild redness, slight swelling, and in some cases small bruises may appear along the injection marks. This is a natural reaction that can accompany treatments involving multiple needle insertions into the skin.
The degree of redness and swelling varies significantly depending on individual skin sensitivity, treatment area, and the amount injected, and in most cases, it gradually subsides over time.
Timeline of Recovery: How Long Does It Last?
Day of treatment to day 1: This is typically when redness and slight swelling are most noticeable. Injection marks may be visible, and the skin may feel sensitive.
Days 2 to 3: Redness and swelling generally begin to gradually ease during this period. Caution is still needed regarding UV exposure and friction during this time.
From day 4 onward: Most visible reactions typically subside, and the skin gradually stabilizes. Some may feel tightness or dryness, so paying attention to deep hydration care from this point can be helpful.
The length and pattern of downtime vary greatly by individual, so the above timeline is meant as a general reference. If recovery is slower than expected or unusual symptoms persist, it's safer to consult the clinic where you had the treatment.
Step-by-Step Home Care: What to Do After the Treatment
Stage 1 (right after treatment to day 3): During this period, priority should be given to soothing redness and caring for the sensitized skin barrier. Basic care includes sun protection, minimizing friction, and using gentle, low-irritation moisturizing products. It's best to avoid hot compresses, saunas, and strong massage.
Stage 2 (from day 4 onward): Once visible reactions begin to stabilize, it's time to switch to care that provides deep hydration and replenishes skin condition. Consistently maintaining hydration and conditioning during this period can help the skin settle more comfortably.
Ultimately, post-treatment care can be divided into two phases: 'soothing and barrier care' in the early stage, followed by 'hydration and conditioning' afterward. Adjusting skincare products in stages to match this flow can help maintain treatment results longer.
Recovery After Treatment Depends on Home Care
If you want to follow step-by-step home care after treatment, it's worth considering products suited to the recovery phase (from day 4 onward). A.B.Ju Cream's Hydro Re-Boosting Cream is a STEP2 product designed for deep hydration and conditioning care during the recovery phase after skin booster treatments like Rejuran. Ingredients such as niacinamide and panthenol can help support skin texture and hydration care. That said, during the sensitive period right after treatment, following your doctor's guidance should come first, and products should be considered only as a supplementary part of home care.
손상 전 수준으로 회복되는 데 도움 (하이드로 리-부스팅, 개인차가 있을 수 있습니다)
출처 P&K 피부임상연구센타 인체적용시험
손상 전 수준으로 회복되는 데 도움 (하이드로 리-부스팅, 개인차가 있을 수 있습니다)
출처 P&K 피부임상연구센타 인체적용시험
FAQ
- How long is the downtime after Rejuran?
- Typically, mild redness and slight swelling appear from the day of treatment up to about 3 days, then gradually subside. However, downtime can vary depending on the treatment area and individual skin condition, so if recovery seems slower than expected, it's best to check with the clinic where you had the treatment.
- How should I manage swelling and bruising after Rejuran?
- Right after the treatment, basic care includes cold compresses (within the range advised by your medical provider), sun protection, and minimizing friction. Bruising tends to fade over time on its own, and it's safer not to rub or massage the area. If swelling is severe or persists for a long time, contact your clinic.
- How many sessions of Rejuran are needed?
- The number of sessions and intervals between them vary depending on skin condition, treatment goals, and treatment area, so there's no one-size-fits-all answer. It's important to consult with your medical provider to establish a treatment plan tailored to you.
- What kind of home care should I do after Rejuran?
- In the first few days, gentle soothing and moisturizing care can help calm sensitive skin, and after day 4, once surface reactions have stabilized, switching to deep hydration and conditioning care may help. Cleanse the treated area gently and be diligent with sun protection.
Medically reviewed by 아비쥬의원 의료진. (September 10, 2026)
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