AI-translated archive post
Hongdae Dermatology Skin Clinic 弘大美丽石医院 · ✦뷰티스닥터 합정역✦ · July 3, 2026
Hello. I’m Kim Ha-won from Beauty’s Doctor. When you look in the mirror and feel that your skin texture has become rougher, you may often find yourself searching for the term “salm...
AI translation notice
This page is an English translation of a Korean Naver Blog archive entry. For exact wording and source context, verify against the Korean archive original and the original Naver post.
Clinic: Hongdae Dermatology Skin Clinic 弘大美丽石医院
Original post date: July 3, 2026
Translated at: August 17, 2026 at 3:04 PM
Medical note: This translation does not guarantee medical accuracy or suitability for treatment decisions.
Hello.
I’m Kim Ha-won from Beauty’s Doctor.
When you look in the mirror and feel that your skin texture has become rougher, you may often find yourself searching for the term “salmon injection.”
However, “salmon injection” is not so much the name of one specific product as it is a broad term for procedures that use salmon-derived ingredients.
That is why it is sometimes used to mean the same thing as Rejuran, while in other cases it may refer to treatments containing different ingredients.
What matters is not the name, but checking what ingredients are included and what purpose they are used for.
The term “salmon injection” commonly refers to two ingredients: PN and PDRN.
PDRN, or polydeoxyribonucleotide, is one of the ingredients derived from salmon.
It is known to have a relatively short-chain structure and is frequently mentioned in the medical field.
PN, or polynucleotide, is also derived from salmon.
It is known as a class of ingredients with longer chains and a higher molecular weight than PDRN, and it is often compared in relation to skin texture, hydration, and fine-line concerns.
Rejuran is known as a PN-based skin booster.
In other words, it is difficult to say that the term “salmon injection” refers only to Rejuran.
When making an inquiry, it is better to ask not only, “Is it a salmon injection?” but also to confirm whether it is PN-based or PDRN-based.
Rejuran is known to involve the microinjection of PN-based ingredients into the skin.
It is often discussed in relation to skin texture, hydration, and fine-line concerns.
Rather than immediately filling and raising sunken areas like a filler, it is closer to an approach that observes the condition and texture of the skin over time.
Therefore, the appropriate choice may differ depending on whether the main concern is a lack of volume or skin texture and dryness.
When considering a salmon injection or Rejuran, it is important to look at your current skin condition before focusing on the product name.
You should check whether your skin texture has become rough, whether fine lines are noticeable, and whether you experience significant dryness.
It is also necessary to examine whether the skin appears thin and whether enlarged pores, redness, or reduced elasticity are present as well.
Your history of receiving skin boosters, fillers, lasers, or chemical peels may also affect the treatment approach and interval.
Other factors that need to be checked in advance include allergies to salmon or seafood and whether you are pregnant or breastfeeding.
Skin thickness, hydration, and recovery responses vary from person to person.
Sun exposure, sleep, stress, and lifestyle habits can also affect skin texture.
After injection, temporary reactions such as redness, raised bumps, and bruising may occur.
Also, rather than being completed in a single session, treatment is often considered over multiple sessions depending on the condition of the skin.
Therefore, the question “How many sessions do I need?” is best answered after assessing your skin condition and desired outcome.
The term “salmon injection” may be familiar, but the ingredients and purposes can actually differ.
It is necessary to distinguish whether your skin condition is suitable for a PN-based treatment, whether the treatment in question is PDRN-based, or whether another procedure would be more appropriate.
You should also consider whether the main issue is skin texture, dryness and fine lines, or whether reduced volume or elasticity is the greater concern.
Because skin conditions differ from person to person, no particular treatment is necessary for everyone.
Rather than deciding based solely on the product name, it is important to first assess your current skin condition and the changes you want during a consultation.
Q. Are salmon injections and Rejuran the same thing?
A. Some clinics use the terms to mean the same thing, but strictly speaking, they may be different.
“Salmon injection” is a broad term for procedures that use salmon-derived ingredients, while Rejuran is known as a PN-based product.
When making an inquiry, it is better to confirm whether the ingredient is PN or PDRN.
Q. Can I receive the treatment if I have a salmon allergy?
A. If you have an allergy to salmon or seafood, you must inform the clinic in advance.
Because salmon-derived ingredients may be included, it is necessary to separately confirm during a consultation whether the treatment can be performed.
Q. How many sessions does it take to improve skin texture?
A. It is difficult to determine this based on a fixed number of sessions.
The number of sessions and intervals required may vary depending on skin thickness, degree of dryness, the condition of fine lines, and recovery response.
Thank you for reading this lengthy post.
This was Kim Ha-won.
Continue browsing
Return to the source archive for more translated posts, or open the Korean clinic profile to compare other public channels.