COSRX 5 PDRN Collagen Intense Vitalizing Serum
By Nur → Last verified 9/29/2026
Price checked 9/29/2026
List price $25.30. 20% OFF FLASH SALE ("Deal is 80% claimed") Price-checked 2026-09-29.
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What we found
Based on how this product compares to others in the serums category, cross-referenced against retailer listings and market data.
Strengths
- + Confirmed fragrance-free
Worth knowing
- - A generous 100mL size at this price point -- good value if the formula works for your skin
Key ingredients
These are the ingredients COSRX highlights for this product, cross-checked against general dermatological and cosmetic-chemistry sources, not a full INCI list.
Fragrance: confirmed fragrance-free.
| Ingredient | What it is | What it does for skin |
|---|---|---|
| Hydrolyzed collagen | Collagen broken down into smaller peptide fragments for better skin penetration. | Acts as a hydrating, skin-conditioning ingredient; topical collagen is too large to replace the skin's own collagen, but supports surface hydration. |
| Allantoin | A soothing compound, naturally occurring in some plants and also made synthetically. | Calms irritation and supports skin healing, often paired with other barrier-focused ingredients. |
| Centella asiatica extract | A plant extract, also called Cica or tiger grass, long used in traditional medicine for wound healing. | Calms redness and irritation and supports the skin barrier; some preclinical and limited clinical research suggests it may also support collagen production, though more rigorous long-term studies are still needed to confirm this. |
| Tocopherol | The chemical name for vitamin E as typically used in skincare formulas. | Helps neutralize free radicals from UV and pollution exposure and supports the skin's moisture barrier. |
| Sodium hyaluronate | The salt form of hyaluronic acid, commonly used for its water solubility and stability in formulas; molecular weight varies by product rather than being uniformly smaller. | Draws and holds moisture the same way hyaluronic acid does; how easily it absorbs depends on the specific molecular weight used, which formulas don't always disclose. |
| Hyaluronic acid | A humectant naturally found in skin, capable of holding many times its weight in water. | Draws moisture into the skin's surface, helping it look and feel plumper and more hydrated. |
| Niacinamide | A form of vitamin B3, one of the most studied ingredients in cosmetic dermatology. | Strengthens the skin barrier by boosting ceramide production, helps even out tone by limiting pigment transfer to skin cells, and can reduce the look of enlarged pores. |
| Panthenol | Pro-vitamin B5, which converts to pantothenic acid once absorbed into skin. | Hydrates as a humectant, supports wound healing, and has anti-inflammatory, soothing effects on irritated skin. |
| Adenosine | A compound naturally present in skin cells, used in skincare as an anti-aging active. | Recognized by South Korea's MFDS as a functional anti-wrinkle ingredient at 0.04% concentration, based on clinical studies showing measurable fine-line improvement; a real but modest effect, not a retinoid substitute. |
| PDRN (sodium DNA) | Polydeoxyribonucleotide, DNA fragments commonly derived from salmon, used in Korean regenerative skincare. | Studied for supporting collagen production and tissue repair; a newer ingredient category with a shorter independent track record than long-established actives. |
What the brand says
COSRX's own marketing claims, not our own findings.
- A daily PDRN serum with 5 PDRN and Low-Molecular-Weight Collagen to help manage skin elasticity and enhance overall skin health
- Boosts skin recovery with 5 PDRN (salmon, centella asiatica, rice, lactobacillus, sea grapes); supports collagen production to firm and strengthen skin core
Research-Based
Our assessment comes from pricing, ingredients, and published information, not personal use, the same standard we apply across the site. This product hasn't been hands-on tested yet. See our Methodology for what that distinction means.
Price history
Current price is the lowest we've recorded so far.
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Frequently asked
How much does COSRX 5 PDRN Collagen Intense Vitalizing Serum cost per mL?
$0.20 per mL (currently $20.00 for 100 mL).
Has COSRX 5 PDRN Collagen Intense Vitalizing Serum been hands-on tested?
Not yet. Our assessment for this product comes from pricing, ingredients, and published information, not personal use, the same standard we apply across the site. See our Methodology for what that distinction means.
What are the key ingredients in COSRX 5 PDRN Collagen Intense Vitalizing Serum?
The ingredients COSRX highlights for this product include Hydrolyzed collagen, Allantoin, Centella asiatica extract, Tocopherol, Sodium hyaluronate, Hyaluronic acid, Niacinamide, Panthenol, Adenosine, PDRN (sodium DNA).
Sources
Pricing and availability for this product were verified against the following retailer listings.