# COSRX 5 PDRN Collagen Intense Vitalizing Serum

The serum step, worked into damp skin before moisturizer. 100 ml bottle.

- Brand: COSRX
- Product: 5 PDRN Collagen Intense Vitalizing Serum
- Price: $26.99
- Availability: Out of stock
- Size: 100ml
- Market: Korean market, the version sold in Korea
- Made in: Republic of Korea
- EAN (barcode): 8800311121423
- Category: Serums & Ampoules

## Key benefits

- 100 ml bottle, the size the Korean market sells
- Goes on after toner and before cream, AM or PM
- Sourced as the original Korean-market version

## How it works

A serum is the step where one idea gets concentrated, and the idea here is the PDRN naming COSRX uses across this line, which on the list is sodium DNA. It carries niacinamide and panthenol, with hydrolyzed collagen and adenosine behind them. It goes on after toner and before moisturizer, morning and evening, pressed in rather than rubbed around. Skin that looks flat and tired rather than dry or congested is the case it fits, and the change it works on is gradual. Twice a day, every day, and it layers under anything else already in the routine.

## How to use

1. Use the 5 PDRN Collagen Intense Vitalizing Serum after toner and before moisturizer, morning and evening.
2. Three or four drops covers the face and neck. Press it in with flat palms rather than rubbing it around.
3. Toner first, this second, then moisturizer, and sunscreen last in the morning.
4. Twice a day, every day. Do not stack it with a second serum doing the same job; two at once do the work of one.

## Ingredients

Aqua/Water, Dipropylene Glycol, Butylene Glycol, Pentylene Glycol, Glycerin, Niacinamide, 1,2-Hexanediol, Betaine, Panthenol, Sodium DNA, Ammonium Acryloyldimethyltaurate/VP Copolymer, Polyacrylate Crosspolymer-6, Xanthan Gum, Ethylhexylglycerin, Adenosine, Hydrolyzed Corn Starch, Disodium EDTA, Hydrolyzed Collagen, Sucrose, t-Butyl Alcohol, Lactobacillus Ferment, Allantoin, Alpha-Arbutin, Centella Asiatica Extract, Propanediol, Tocopherol, Sodium Phytate, Sodium Hyaluronate, Hydrolyzed DNA, Caprylyl Glycol, Hydroxypropyltrimonium Hyaluronate, Acetyl Hexapeptide-8, Hydrolyzed Hyaluronic Acid, Sodium Acetylated Hyaluronate, Hyaluronic Acid, Hydrolyzed Sodium Hyaluronate, Sodium Hyaluronate Crosspolymer, Potassium Hyaluronate

## FAQ

### What does PDRN mean for this serum's actual ingredient list?

PDRN is not itself an INCI name; on this bottle it appears as Sodium DNA, tenth on the list, and again further down as Hydrolyzed DNA. Niacinamide leads the active portion of the formula in sixth place, with hydrolyzed collagen and alpha-arbutin following in the middle of the list. Reading the actual INCI names rather than the marketing term is the accurate way to know what this serum contains.

### Is this serum suitable for sensitive skin?

No fragrance, essential oil, denatured alcohol, silicone, paraben, sulfate surfactant, mineral oil, or added colourant appear anywhere on this ingredient list. Panthenol, allantoin, and centella asiatica extract sit in the middle of the list as calming support alongside the DNA-derived and collagen ingredients. Anyone with reactive skin should still patch test given the acetyl hexapeptide-8 and lactobacillus ferment further down the list, since a new active is worth introducing slowly regardless of the overall gentle formulation.

### How long before this vitalizing serum shows a difference?

Niacinamide, the DNA-derived ingredients, and hydrolyzed collagen all work as part of a sustained routine rather than delivering a change after one application. Adenosine and the eight hyaluronate forms further down the list support surface hydration in the meantime while the other actives build with repeated use. Most people apply this daily for several weeks before assessing whether skin texture and tone have shifted, since a single night will not show a dramatic result.

### Can this serum be layered with a separate hyaluronic acid moisturizer?

Yes, this serum already carries eight separate hyaluronate forms of its own, so a hyaluronic acid moisturizer applied afterward layers naturally rather than duplicating an ingredient that would cause any conflict. Niacinamide and alpha-arbutin sit earlier in the list and are commonly used alongside a standard moisturizing routine. As with any new serum, introduce it before your usual moisturizer and watch how skin responds over the first few uses.

### How can I confirm this bottle is the authentic Korean-market formula?

This product's own barcode, 8800311121423, is a genuine, checkable EAN for this exact serum, so confirming that number matches your box is a first-line check. Beyond the barcode, COSRX runs its own authentication system: the batch number and expiration date printed on your unit are entered on the verification page at cosrx.com. Reading both the barcode and the batch code directly off your packaging, rather than trusting a listing's description, is the reliable way to confirm authenticity.

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Page: https://korean-pharmacy.com/products/cosrx-5-pdrn-collagen-intense-vitalizing-serum