Rejuran Healer: Everything You Need to Know Before Your Treatment (An All-in-One Guide to Effects, Pain, and Downtime)

Rejuran Healer is a skin booster treatment that directly injects polynucleotides (PN), extracted from the reproductive cells of salmon and trout, into the dermis layer to induce the skin to regenerate itself. It is not a treatment that fills volume like fillers or paralyzes muscles like Botox; rather, its core purpose is to upgrade the 'quality' of the skin itself. It is a product manufactured by the domestic company PharmaResearch Co., Ltd., and confirming whether it is an authentic product approved by the Ministry of Food and Drug Safety (MFDS) is the essential first step.

However, one thing must be clarified. Rejuran Healer is not a treatment that makes a dramatic difference after just one session. It works by gradually changing as collagen builds up over several weeks, requiring 3 to 4 sessions at 2-to-4-week intervals. Since the nature of the effect is different, your satisfaction will depend on where you set your expectations. Below, we will break down everything from ingredients to pain, downtime, and differences from other treatments step-by-step.

🧬 What exactly is Rejuran Healer?

The star of Rejuran Healer is PN (Polynucleotide). These are DNA fragments extracted and purified from the testes of salmon and trout, known to be highly compatible with human tissue and to have low risks of immune reactions or side effects.

This is how it works: When PN enters the dermis, it stimulates fibroblasts. As these cells are activated, the production of collagen and elastin is promoted. As a result, the dermis thickens and elasticity increases. PDRN (Polydeoxyribonucleotide), which is often mentioned in similar categories, is an ingredient that originated from wound healing and tissue regeneration research and is sometimes used interchangeably with or distinguished from PN.

The PN concentration of the basic Rejuran Healer is commonly known to be 2%, and the volume of one syringe is typically 2mL (2cc).

📌 Key Summary: Rejuran Healer is a skin booster aimed at skin regeneration, using salmon-derived PN to awaken fibroblasts and induce collagen and elastin production.

✨ How effective is it, and when does it appear?

This is the most frequently asked question. The effects are not immediate. They appear gradually over several weeks after the treatment, and it is difficult to feel a difference after only one session.

There are figures presented based on clinical reports. Improvement in wrinkles around the eyes was observed in 94.29% of subjects, and data such as a 21.78% increase in skin elasticity, a 14.69% increase in hydration, and a 15–30% increase in dermal thickness and density are often cited. However, since these figures require verification of their sources, such as study design and sample size, it is safe to take them as reference indicators only.

Realistically, the changes you can expect are as follows:

• Improvement in fine wrinkles and skin texture, overall elasticity and glow

• Improved skin thickness and density due to increased dermal thickness

• Improvement in texture in thin areas such as around the eyes

On the flip side, we must also be honest about the areas where the effects are limited.

• Deep nasolabial folds or areas with lost volume → Filler territory

• Severe pigmentation and blemishes → Requires combination with laser or whitening treatments

• Deep, pitted acne scars → Specialized treatments like subcision, TCA CROSS, or fractional lasers are more suitable

📌 Key Summary: While it is highly effective for fine wrinkles, elasticity, and skin texture, deep volume loss, severe pigmentation, or scars must be treated in combination with other procedures.

💉 What about pain, downtime, and embossing?

To be completely honest, it can be painful. Because it is injected directly into the dermis multiple times, it is accompanied by a stinging sensation. Therefore, an anesthetic cream is often applied before the procedure.

If you are concerned about the pain, you can consider options like Rejuran HB Plus, which contains lidocaine. It has been reported to reduce pain by 56% compared to the original.

The most representative reaction immediately after the procedure is the embossing effect. These are bumpy marks where the injection sites swell up; since this is the core of the downtime, it is also a popular search term.

Therefore, it is best to avoid having the treatment a few days before an important appointment. Going to work the next day is usually possible, but if you bruise easily, give yourself some extra time.

📌 Key Summary: There is some pain, the embossing usually disappears in 1 to 3 days, and bruising clears up within 1 to 2 weeks. Please schedule your appointment with some buffer time in mind.

🔍 How is it different from Hyaluronic Acid injections, Juvelook, and Exosomes?

Rejuran Healer belongs to the skin booster category. Even within the same category, the ingredients and purposes vary, making it easy to get confused. Here is the summary:

Simply put, HA injections target 'immediate hydration and glow,' whereas Rejuran targets 'fundamental skin regeneration.' Since their purposes differ, they are often used together. They can also be combined with fillers and Botox, but the sequence and intervals should be discussed with a medical professional.

📌 Key Summary: HA injections provide immediate hydration, while Rejuran promotes gradual regeneration. Even within the same category, their ingredients and purposes differ, so distinction is necessary.

📋 How are the Rejuran product lines categorized?

'Rejuran' is not a single product. There are several lines with different concentrations, viscosities, and purposes, so it is recommended to clarify which product is being used during your consultation.

• Healer: The basic version for the entire face

• I (Eye): Designed for the eye area, suitable for thin and sensitive regions

• HB / HB+: Hyaluronic Acid complex type; HB+ contains lidocaine for pain relief

• S: High-viscosity type, utilized for scars, etc.

Since the appropriate line varies according to the area and purpose, rather than just saying