Rejuran scar question: does it fill acne scars, or support them?

Does Rejuran help scars? The short answer

Hello, I'm Dr. Won Sin Lee, a board-certified dermatologist and Chief Director at WELLS Clinic in Apgujeong, Seoul. I completed my dermatology residency and board certification at Asan Medical Center, where I am now an adjunct professor of dermatology. Patients often ask me about a Rejuran scar plan, usually in the same words: will a skin booster fill in my acne scars?

My honest answer is that Rejuran improves the skin around a scar, but it is not what lifts a depressed scar back to the surface. Rejuran HB+ improves the skin's internal environment, elasticity, fine lines, texture and hydration. The dents themselves are treated with dermal remodeling and filling, which at WELLS means Fractional Picosecond Laser Treatment and Juvelook, chosen by scar type.

So if you came here searching for rejuran scar results, the useful question is not "Rejuran or laser?" It is where each one sits in the plan. The rest of this post explains that, step by step, so you can judge what a Seoul visit can realistically do for your skin.

What is Rejuran, and what does it change in the skin?

Rejuran is a skin booster: a product injected into the dermis rather than into muscle or deep fat. The version we use, Rejuran HB+, combines salmon-derived polynucleotide (PN) with hyaluronic acid and lidocaine.

• Polynucleotide (PN) improves the skin's internal environment and structure, adding elasticity in the epidermis and dermis and smoothing fine lines and texture.
• Hyaluronic acid boosts hydration further, which helps skin that feels tight or dry underneath.
• Lidocaine in the formula cut post-injection pain by an average of 53% on the VAS scale compared with Rejuran Healer.

We recommend four sessions at 2–3 week intervals. That schedule matters for anyone thinking of a single Rejuran treatment on a short trip: one session is a start, not the full course.

I inject Rejuran by hand rather than with an injector gun. It takes longer, but the product has to sit accurately in the dermis for its regenerative and hydrating effect. Small raised bumps, often called embo marks, appear straight after; they usually settle within 2–3 days, though some people see them fade in a day and others closer to five.

Why a depressed acne scar needs more than a skin booster

Most acne scars are depressions. In general, inflammation has destroyed collagen in the dermis, and the surface sinks where that support is missing. Some scars are also pulled down by firm tissue underneath.

A skin booster spread across the face improves the quality of the skin, but it does not rebuild a localized hole or release tissue that tethers a scar. That is why I don't present Rejuran on its own as a scar treatment. It can make texture look smoother and skin feel healthier, which is real, but it is a different job from remodeling.

If you want the full picture of scar work for a visitor, I'd point you to our guide on Korean acne scar treatment and how to plan it around a trip. This post stays on the Rejuran side of the question.

What actually remodels acne scars at WELLS

For depressed scars we start with Fractional Picosecond Laser Treatment. It creates optical breakdown (LIOB) inside the dermis with almost no heat damage to the surface. There is no oozing and no artificial skin dressing, and any redness usually clears in 3–4 days.

For deep scars, Juvelook does what a skin booster cannot. It is a PLA plus hyaluronic acid injectable, KFDA-approved, that fills depressed scars immediately while stimulating collagen.

Mosaic fractional laser, microneedle RF, Aquapeel and the Clarity dual laser are combined depending on scar type and pore condition. Results are shown to you with a dermatoscope, so you see the skin surface rather than relying on a mirror under different lighting.

Where Rejuran fits in a Rejuran scar plan

Fractional laser and RF needling work by giving the skin controlled micro-stimulation so new tissue fills in. Done too strongly, they can leave skin dry. That is one reason we treat at an appropriate energy rather than the highest one, and one reason a skin booster earns its place beside them.

When Rejuran is combined with laser treatment, it delivers regenerative ingredients and moisture directly into the dermis. In practice that means better radiance and relief from inner dryness while the scar work does its slower job. I see it as tending the soil around the repair, not as the repair itself.

Rejuran Tox for pores and texture next to the scars

Scarred cheeks often come with enlarged pores. Our Rejuran Tox protocol pairs Rejuran HB+ (3 cc) for regeneration, moisture and elasticity underneath with a skin smoothing injection (3 cc) of tiny neuromodulator doses across the surface for fine lines, pores and texture, in one session. It is listed at ₩913,000 (VAT included) with the Korean-made neuromodulator, or ₩1,089,000 (VAT included) with the US-made one.

Dose matters too. Too little product spread over a whole face makes the effect hard to see. As a guide, I suggest at least 2 cc for the eye area and front cheeks, at least 3 cc if the forehead is included, and around 4 cc for a thorough full face.

Who Rejuran suits when scars are the worry, and who should start elsewhere

• A good fit: shallow texture irregularity, dryness and dullness around old scars, or skin you want in better condition alongside laser sessions.
• A good fit: people who have finished or are doing scar remodeling and want hydration and elasticity support.
• Start elsewhere: clearly depressed or deep scars. These need dermal remodeling and, where suitable, Juvelook first.
• Start elsewhere: active breakouts. Acne generally needs to be under control before scar work makes sense, and personalized acne treatment is the usual first step.

For anyone deciding purely on skin quality, our broader post on Rejuran in Seoul, what it does and what it costs covers the treatment without the scar angle. You can see the other injectables we use on the injectables and skin boosters page.

Planning a Rejuran scar visit from abroad

Every plan starts with a dermatologist consultation, because the right order depends on what is on your skin. The price for acne scar and pore treatment is confirmed at your consultation; Rejuran Tox has the listed price above.

• Before you fly: send photos and your dates on WhatsApp. Our coordinators reply in English and book a consultation.
• At the clinic: we look at scar type, pores and skin condition, then decide whether laser, Juvelook, Rejuran or a combination comes first.
• Around your flight: after fractional pico laser, redness usually clears in 3–4 days; after Rejuran, embo bumps usually settle in 2–3 days. Tell us your flight dates and the dermatologist will advise on timing.
• After you go home: Rejuran HB+ is recommended as four sessions at 2–3 week intervals, which is worth knowing before you book a single trip.

WELLS has been in Apgujeong since 2008, five minutes on foot from Exit 3 of Apgujeong Station. You can read more about my background on my doctor profile.

Results and recovery vary by individual. Every treatment carries possible side effects, which are explained at the consultation. Prices are in Korean won, including 10% VAT, and confirmed at your consultation. This article is general information from the clinic, not a diagnosis.

Written by

Dr. Won Sin Lee

Medical Director · WELLS Clinic, Apgujeong

• Board-certified dermatologist in Korea; trained at Asan Medical Center in Seoul
• Dermatology residency, Asan Medical Center; board certification in dermatology in Korea
• Adjunct professor, Department of Dermatology, Asan Medical Center
• Former director, Bokji Dermatology Clinic, Korean Leprosy Welfare Association
• Commendation for Outstanding Service as a Public Health Physician

Full profile