PN vs. PDRN Skin Boosters: Are Rejuran and PDRN Injections the Same?

PN and PDRN share a nucleic-acid-derived origin, but differences in molecular weight, physical properties, and manufacturing can affect viscosity and persistence in tissue. In clinical practice, each product's approved scope and ingredients take priority, and equivalence should not be judged from nicknames such as "salmon injection" alone. Because the injection's micro-injury and the formulation may act together, it is also difficult to isolate and describe the ingredient's effect alone.

Some clinical studies and systematic reviews have reported possible improvements in measures of skin texture, hydration, elasticity, and fine wrinkles. However, certainty of the evidence is limited because studies and sample sizes are small and the products, concentrations, injection methods, and assessment times differ. Deep wrinkles, substantial volume deficiency, tethered scars, and active acne may require other treatment, and results and duration cannot be guaranteed.

Adults whose main concerns are dryness, rough texture, or shallow fine lines and who can accept several days of visible injection-related marks may be candidates for consultation. Be sure to disclose pregnancy or breastfeeding, active infection, dermatitis, herpes, bleeding disorders, active immune disease, a history of fish allergy, keloids or nodules, and areas where previous filler, threads, or skin booster material may remain.

After the doctor checks skin thickness, inflammation, scars, and previous injection history, the authentic product name, total quantity, whether it is diluted, the injection layer, and excluded areas are recorded. Manual injection or device-assisted delivery may be performed after anesthesia. Small bumps usually remain visible for several days and bruising for 1–2 weeks. Avoid alcohol before treatment and do not stop anticoagulants on your own; discuss medication adjustments with the prescribing clinician.

In addition to pain, redness, bruising, swelling, and itching, possible complications include infection, nodules, granulomatous reactions, skin-surface irregularity, and post-inflammatory hyperpigmentation. Contact a medical institution immediately if pain, heat, or pus worsens, the skin turns white or mottled, or visual abnormalities occur. Leftover product must not be reused arbitrarily, and products of unclear origin must not be injected.

Q. Are PN and PDRN the same ingredient?

A. Although both are DNA-derived, their size, formulation, and approved purposes differ, so they cannot be assumed to be the same product category.

Q. Is one Rejuran treatment enough?

A. Response varies with skin condition, product, and quantity, so the number of sessions or duration cannot be guaranteed uniformly.

Q. Is it normal for the small bumps to last a long time?

A. They usually subside, but medical evaluation is needed if pain, heat, or redness worsens or a firm nodule persists.

A 2025 systematic review of PN for skin rejuvenation on PubMed(https://pubmed.ncbi.nlm.nih.gov/39645667/) analyzed 9 studies involving 219 participants and noted promising findings as well as limitations in study quality and protocols. We also consulted the full NIH text of a 2024 review of PN skin applications(https://pmc.ncbi.nlm.nih.gov/articles/PMC11311621/). Actual selection should prioritize each Korean product's approval information and instructions for use.

SEOLREIM Clinic does not select a procedure based only on the labels PN or PDRN. The doctor directly evaluates the skin barrier, pores, scars, fine wrinkles, and previous injection history, and compares their roles with signature programs such as Shining Rejuran, Royal Rejuran, Baby Collagen, and Silky Pore. Under the clinic's principles of authentic products, correct quantities, and attentive care, the doctor confirms the product name and amount used and performs the procedure directly.

Visitors searching for skin booster Korea or Rejuran Korea should confirm the actual product name and total quantity, expected temporary bumps, and how to contact the clinic if delayed nodules develop after returning home. SEOLREIM Clinic is on the 11th floor of the Gangnam 8258 Building, about 1 minute from Exit 3 of Gangnam Station. Appointments can be made through the KakaoTalk consultation, Naver booking, or telephone channels on the website. International visitors should prepare their passport, allergy information, current medications, recent procedure records, and departure schedule, and confirm available consultation languages and the scope of interpretation support before booking. Depending on the examination, same-day treatment may not be possible or follow-up after returning home may be needed.

Written by: SEOLREIM Content Editor / Medical review: Completed / Review confirmation date: 2026-10-23 / Publication date: 2026-09-25 / Updated: 2026-10-27. This is general medical information and does not replace individual diagnosis or a treatment prescription.