Shop COSRX 5 PDRN Collagen Intense Vitalizing Serum
Serum
COSRX

5 PDRN Collagen Intense Vitalizing Serum

~$22
Dark spotsFine lines & firmnessRednessDryness

Evidence behind the ingredients

Real citations from our research database — one per tracked active in this product. Click any ingredient name to read its full evidence dossier.

PolydeoxyribonucleotideModerate evidence4 citations

The "salmon DNA" trending in K-beauty and Korean clinics. Strong wound-healing pedigree translated into anti-aging. Speeds repair after lasers/microneedling, smooths fine lines, and brightens. Often layered with vitamin C and niacinamide. Worth knowing: salmon- or trout-derived PDRN has much stronger clinical evidence than plant ("phyto") PDRN, and the dose matters more than the marketing — favor products that list a real PDRN concentration (roughly 1,000+ ppm) over big headline numbers on plant-derived versions.

Lee D et al., Skin Regeneration and Barrier-Improvement Efficacy of Polydeoxyribonucleotide Isolated from Panax Ginseng Adventitious Root, Molecules 2023;28(21):7240 — plant-derived PDRN promoted keratinocyte/fibroblast proliferation and strengthened barrier function

2023Mechanism onlyPMID:37959659View source ↗

Lee S, Won KH et al., A Mixture of Topical Forms of Polydeoxyribonucleotide, Vitamin C, and Niacinamide Attenuated Skin Pigmentation and Increased Skin Elasticity by Modulating Nrf2, Molecules 2022;27(4):1276 — topical PDRN + Vit C + niacinamide reduced melanin and improved elasticity in UV-B model, comparable to hydroquinone

2022Positive — efficacyPMID:35209068View source ↗

Squadrito F et al., Polydeoxyribonucleotide: A Promising Biological Platform to Accelerate Impaired Skin Wound Healing, Pharmaceuticals (Basel) 2021;14(11):1103 — review documenting PDRN activation of adenosine A2A receptors, VEGF release, and accelerated wound healing across diabetic, thermal, and ischemic models

2021Mechanism onlyPMID:34832885View source ↗
Alpha ArbutinModerate evidence9 citations

A safer, slower-acting alternative to prescription-strength dark-spot faders. Built for long-term use without irritation.

Marziya M et al., Mechanism of Cyanotis arachnoidea Gel in improving melasma based on network pharmacology and transcriptomics, Zhongguo Zhong Yao Za Zhi (China Journal of Chinese Materia Medica) 2025;50(13):3775-3790 — Southwest Minzu University Chengdu; arbutin gel as positive-control comparator in melasma rat model

2025Mechanism onlyPMID:40904158View source ↗

Sarkar R et al., Efficacy and Safety of a Topical Formulation Containing Trihydroxybenzoic Acid Glucoside and alpha-Arbutin in Indian Females With Facial Melasma, Journal of Cosmetic Dermatology 2025;24(2):e16753 — 120 Indian women: 10% THBG + 2% alpha-arbutin reduced melanin 16.3% and mMASI 18.4% with good tolerability

2025Positive — efficacyPMID:39943675View source ↗

Ma ZY, Lu Y, Melanin synthesis and regulation in vivo and commonly used melanin inhibitors from natural products and traditional Chinese medicine, Zhongguo Zhong Yao Za Zhi (China Journal of Chinese Materia Medica) 2020;45(24):5898-5916 — Beijing University of Chinese Medicine review classifies arbutin among tyrosinase-active-site-targeting melanin inhibitors

2020Mechanism onlyPMID:33496130View source ↗
NiacinamideStrong evidence11 citations

A multitasker that calms redness, evens out skin tone, and helps oily skin balance out. One of the safest do-a-little-of-everything ingredients.

Moro F et al., Skin Cancer Prevention and Antiaging: Role of Nicotinamide, International Journal of Molecular Sciences 2026

2026Mechanism onlyPMID:42278444View source ↗

Passeron T et al., An Investigator-Blinded, Randomized Trial of a Broad-Spectrum Sunscreen Containing Sclareolide and Niacinamide, Dermatology and Therapy (Heidelberg) 2026

2026Positive — efficacyPMID:41240206View source ↗

Vergilio MM et al., Topical Formulation with Niacinamide Combined with 5 MHz Ultrasound for Improving Skin Ageing, Current Medicinal Chemistry 2025

2025Positive — efficacyPMID:39171587View source ↗
+3 more ingredients
Centella AsiaticaModerate evidence9 citations

Also called "cica," it calms redness, repairs the skin barrier, and speeds up healing. The go-to for irritated or reactive skin.

Hur N et al., A Randomized, Double-Blind, Placebo-Controlled Trial Assessing the Effects of Oral Centella asiatica Extract on Skin Aging-Related Parameters in Middle-Aged Korean Women, Nutrients 2026

2026Positive — efficacyPMID:42196964View source ↗

Borowicz KK et al., Geroprotective Potential of Centella asiatica: Modulation of Cellular Aging, Nutrients 2026

2026Mechanism onlyPMID:42280293View source ↗

Su Z et al., The Effectiveness and Safety of a Skin Care Product With Centella asiatica Leaf Extract, Ceramide NP, and Panthenol in Subjects With Sensitive Skin: A Prospective, Observational Study, Journal of Cosmetic Dermatology 2025;24(7):e70324 — Sun Yat-Sen U 4-week study; cream provided rapid relief of facial redness and supported barrier function

2025Positive — efficacyPMID:40682399View source ↗
ArgirelineModerate evidence4 citations

Sometimes called "topical Botox," it's a peptide that subtly reduces the depth of expression lines around the eyes and forehead when used daily over months. Mild effect, but real.

Zhu M et al., The effect of a serum containing acetyl hexapeptide-8, dipeptide diaminobutyroyl benzylamide diacetate and gluconolactone on skin biomarkers, wrinkles and skin texture: ex vivo and clinical studies, International Journal of Cosmetic Science 2026 — two clinical trials (n=50, n=42) showed 35-69% static wrinkle improvement and significant elastic fiber and collagen biomarker increases at 12 weeks

2026Positive — efficacyPMID:41668671View source ↗

Zdrada-Nowak J, Surgiel-Gemza A, Szatkowska M, Acetyl Hexapeptide-8 in Cosmeceuticals: A Review of Skin Permeability and Efficacy, International Journal of Molecular Sciences 2025

2025InconclusivePMID:40565185View source ↗

An JH, Lee HJ, Yoon MS, Kim DH, Anti-Wrinkle Efficacy of Cross-Linked Hyaluronic Acid-Based Microneedle Patch with Acetyl Hexapeptide-8 and Epidermal Growth Factor on Korean Skin, Annals of Dermatology 2019;31(3):263-271 — split-face cross-linked HA + Argireline microneedle patch improved wrinkles on Korean skin (cross-attributed; primary citation for HA id=13)

2019Positive — efficacyPMID:33911590View source ↗
AdenosineModerate evidence7 citations

A Korean-approved anti-wrinkle ingredient that encourages collagen production for a smoother, firmer look.

Nguyen NH et al., Translational Evaluation of a Disodium Adenosine Monophosphate (AMP2Na)-Based Topical Formulation for Physiology-Aligned Skin Rejuvenation, International Journal of Molecular Sciences 2026

2026Mechanism onlyPMID:42278371View source ↗

MFDS Approved Functional Cosmetic Active — Adenosine (anti-wrinkle). Korean Ministry of Food and Drug Safety, Cosmetic Functional Active Ingredient List

2020Regulatory approvalMFDS:Adenosine-AntiWrinkleView source ↗

Jang M et al., Dissolving microneedle with high molecular weight hyaluronic acid to improve skin wrinkles, dermal density and elasticity, International Journal of Cosmetic Science 2020;42(3):302-309 — Korean comparison: HMW HA + adenosine outperformed LMW HA across wrinkle and elasticity parameters

2020Positive — efficacyPMID:32421218View source ↗

Sources: PubMed · KCI · J-Stage · CNKI · Wanfang · SFD · MFDS · Cochrane · SCCS · CIR. Every entry points to a specific document. See methodology for what each outcome label means.

Layering conflicts

Ingredients in this product that can react with common actives. Avoid stacking unless noted.

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