Polynucleotide in Korea: My Honest First-Timer's Guide to the PDRN Salmon Injection — From a Gangnam Doctor

Dr. Hyunji Kim
2026-08-288 min read

Polynucleotide in Korea has become one of the most-asked-about treatments at my clinic, and the PDRN salmon injection sits right at the center of that curiosity. Patients walk in having read about "salmon DNA" on Dcard, PTT, or Instagram and want to know what's real and what's hype. So let me give you the honest, first-timer's version.
I'm Dr. Hyunji Kim, director at Delphic Clinic in Gangnam. I've injected a lot of salmon DNA over the years, and I want you to understand what it genuinely does — and, just as importantly, what it doesn't do — before you book anything.
What it actually is — in plain language
The salmon DNA injection (PDRN) delivers polynucleotides derived from salmon (鮭魚) directly into your skin. These carry PDRN growth factors and MGF, which are excellent for collagen and fibroblast regeneration. In plain terms: we're placing regenerative material into the dermis so your own fibroblasts and collagen synthesis get switched on, helping damaged skin repair itself while giving a brightening effect.

Here's the honest part about what it isn't: it's not a filler and it won't add volume or lift sagging tissue. It's not an instant-glow party trick either — the regeneration happens over time as your skin rebuilds. If you want a dramatic contour change today, this is the wrong tool.
Who it's really for
Polynucleotide skin boosters shine when the goal is skin quality and repair. I most often recommend the salmon DNA injection for:
- People who want long-lasting regenerative effects worked from within the skin, not a surface-only glow
- Those seeking anti-inflammatory, soothing benefits to help wound and skin recovery
- Anyone bothered by acne scars or enlarged pores
- People wanting to improve fine wrinkles caused by aging
- First-timers who prefer a gentle, no-downtime way to start improving skin texture and brightness
And who I steer elsewhere: if your main issue is volume loss or sagging, I'll talk to you about lifting or volumizing options instead. If you're pregnant, or have an active skin infection at the site, we wait. Honesty first — I'd rather send you to the right treatment than sell you this one.
How it compares — an honest comparison
Patients constantly ask how the salmon injection stacks up against other options. Here's a general guide — the actual choice is made in person once I've looked at your skin.
In short: if your concern is skin quality and repair rather than shape, a polynucleotide treatment like this is usually the better fit than filler.
Before and after: what's realistic
Let me set honest expectations. This is a regenerative treatment, so results are gradual — your skin looks calmer, brighter, and smoother as fibroblasts and collagen respond over the weeks following your sessions. Acne scars and pores soften progressively rather than vanishing overnight, and a short course spaced out tends to serve better than a single visit. Individual results always vary.
Get a free 1:1 consultation
Message our English-speaking team — same price as locals, no pressure.
What to expect — step by step
- 1
1. Free consultation
We look at your skin, discuss your concerns and goals, and decide honestly whether the salmon injection is right for you — or whether something else fits better.
- 2
2. Numbing & prep
We cleanse and apply numbing cream so the session stays comfortable. The salmon DNA solution is opened in front of you.
- 3
3. The session
The injections take roughly 15–20 minutes. You may feel small pinches; we work carefully and check in with you throughout.
- 4
4. Back to your day
There's no real downtime. Slight redness or tiny marks settle quickly. Avoid alcohol, smoking, saunas/jjimjilbangs, hot baths, and hard exercise for one week.
- 5
5. Results build over weeks
As regeneration and collagen synthesis kick in, skin quality improves gradually. We plan follow-up sessions to match your goals.

How we do it at Delphic — and why it matters
Every salmon injection here is doctor-led and the solution is opened in front of you, so you know exactly what's going into your skin. I tailor the depth and placement to your concern — scars and pores are treated differently from fine aging lines — and I'd rather do fewer, well-planned sessions than over-treat you.

How much does it cost in Korea?
Pricing for polynucleotide treatments in Korea varies by clinic and by how much product is used. Here are our genuine prices — no vague "from" numbers:
| Salmon Injection 3cc (Opened in front of patient) | ₩180,000$130 |
Coming from overseas? Here's how we make it easy
We're a short walk from Sinnonhyeon Station Exit 3, with on-site English and Chinese interpreters so nothing gets lost in translation. The salmon injection is one-day friendly with no real downtime, which makes it easy to fit into a trip — and you pay the same price as any local patient.
Start with a free 1:1 consultation
The best first step is a free, no-pressure 1:1 consultation. I'll tell you honestly whether polynucleotide is right for your skin, how many sessions make sense, and what results are realistic. If it's not for you, I'll say so.
Get a free 1:1 consultation
Message our English-speaking team — same price as locals, no pressure.
Thanks for reading — I hope this gave you a clear, honest starting point. When you're ready, come see us and we'll build a plan around your skin, not a template. — Dr. Hyunji Kim, Delphic Clinic, Gangnam, Seoul.
Frequently asked questions
Does the PDRN salmon injection hurt?
Most patients find it very manageable. We apply numbing cream beforehand, and because the salmon DNA solution is delivered through fine injections, discomfort is brief. Some people feel small pinches or tiny bumps that settle within a day. If you're sensitive, tell us and we'll adjust.
How long do the results last?
The regenerative effect builds gradually as fibroblasts and collagen synthesis are activated, and improvements are meant to develop over your course of sessions. Because everyone's skin and lifestyle differ, longevity varies — we plan maintenance individually rather than promising a fixed number of months.
How does it compare to a filler or Rejuran?
Filler adds volume; PDRN doesn't. Polynucleotide-based treatments like this focus on regeneration, calming inflammation and improving skin quality — texture, scarring, brightness. Rejuran is another polynucleotide option; the right pick depends on your skin and goals, which we decide in person.
Is there any downtime?
No real downtime. You may see tiny injection marks or slight redness that settles quickly. For one week after, avoid heavy drinking, smoking, saunas/jjimjilbangs, hot baths, and strenuous exercise so your skin can regenerate well.
How many sessions do I need?
It depends on your concern — acne scars, pores, or aging wrinkles usually respond better to a short course spaced out over time rather than a single visit. We'll map a realistic plan at your consultation.
How much does the salmon injection cost in Korea?
At Delphic, the Salmon Injection 3cc (opened in front of you) is ₩180,000. See the price block below — and it's the same price for locals and visitors, with no foreigner mark-up.

Written by
Dr. Hyunji Kim
Dr. Hyunji Kim is the director and lead physician at Delphic Clinic in Gangnam, Seoul. She trained at Korea University Medical Center and personally performs consultations and procedures for both local and international patients.
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