Where does this sheet mask go in my routine?

After toner, in place of your serum step, in the evening. Toner goes on before it, and the rest of the routine goes on after you take the sheet mask off. If you are adding it to a routine you already like, give it a week on its own first, so what you see is the Sodium DNA and not three changes at once.

Is this the Korean-market sheet mask or a US version?

The Korean-market one, Sodium DNA and all. We match this sheet mask to its Korean barcode before it reaches the shelf, which is the check that tells you which market release you are holding.

What else is on the list besides Sodium DNA?

Niacinamide, Allantoin and Adenosine. The order they are printed in on this sheet mask's panel is the order on the box, so you can see where Sodium DNA sits relative to them. Further down the same panel: Alpha-Arbutin, Hydrolyzed DNA and Acetyl Hexapeptide-8.

COSRX

5 PDRN Hyaluronic Acid Vital Hydrating Hydrogel Mask

Name: COSRX 5 PDRN Hyaluronic Acid Vital Hydrating Hydrogel Mask
Brand: COSRX
SKU: Shopify-8800311120907
Price: 4.7 USD
Availability: InStock

COSRX 5 PDRN Hyaluronic Acid Vital Hydrating Hydrogel Mask is a 1ea sheet mask from COSRX built around Sodium DNA.

Reviewed by Nurcan Saglam, licensed dermo-cosmetic expert (Paris)

No reviews yet

$4.70

1 ea

Ships from California or direct from Korea
Korean barcode and batch code intact

Suited to: Dehydrated skinSensitive skinSkin that has lost bounceDull, uneven tone

Helps with: Shoppers looking for Sodium DNA in a sheet maskRoutines that want Sodium DNA and Niacinamide in one stepFilling the sheet mask step with a Korean-market formulaAnyone who wants the Sodium DNA sheet mask sold on Korean shelves

In stock. Ships from California or direct from Korea

You’re $100.00 away from free US shipping.

Ships from California or direct from Korea
30-day returns
Free US shipping on orders of $100 or more
Tracked delivery to your door

Verified authentic Shipping and returns Reviews

How it works

The 5 PDRN Hyaluronic Acid Vital Hydrating Hydrogel Mask is a 1ea sheet mask, used after toner, in place of your serum step, in the evening. The active it is built around is Sodium DNA, named twenty-third on its own ingredient list. The same list carries Niacinamide, Allantoin and Adenosine, so the active is not the only thing on it worth naming. How much of the Sodium DNA stays on the skin, and for how long, is decided by the sheet mask format rather than by the list alone. This is the Original Korean Formula, the sheet mask COSRX sells in Korea, Sodium DNA and all.

Key benefits

Sodium DNA, the active this sheet mask is built around
Niacinamide, Allantoin, Adenosine and Alpha-Arbutin on the same list, actives
Hydrolyzed DNA and Acetyl Hexapeptide-8 further down the same list
Cyanocobalamin and Lactobacillus Ferment further down the same list
Sodium DNA named twenty-third on the manufacturer list printed on this page
Original Korean Formula, the sheet mask sold on Korean shelves

Key actives

4Niacinamideactive

Niacinamide is vitamin B3, and it is the most studied active in Korean formulation. The panel names it fourth on this sheet mask's list, beside Sodium DNA.

17Allantoinactive

Allantoin is a comfrey-derived compound used to condition skin and soften the outer layer so it feels smoother. It is one of the standard additions to a formula built for easily irritated skin. The panel names it seventeenth on this sheet mask's list, beside Sodium DNA.

20Adenosineactive

Adenosine is a nucleoside that Korea's own cosmetic authority recognises as a wrinkle-care functional ingredient, which is why it appears on so many Korean lists at a low level. It is used for the look of fine lines and is stable and well tolerated. The panel names it twentieth on this sheet mask's list, beside Sodium DNA.

23Sodium DNAactive

Sodium DNA is the salt of DNA, in Korean skincare almost always salmon derived, and it is the ingredient behind the PDRN category. It is used as a humectant and for the look of tired skin; the fragments themselves are what the name PDRN refers to. The name on the box points at it, and it is named twenty-third on this sheet mask's own ingredient list.

24Alpha-Arbutinactive

Alpha-Arbutin is a plant-derived compound, related to the sugar-bound form found in bearberry, used for the look of dark spots and uneven tone. It is stable in water and works at skin-friendly pH. The panel names it twenty-fourth on this sheet mask's list, beside Sodium DNA.

How to use

Use the 5 PDRN Hyaluronic Acid Vital Hydrating Hydrogel Mask after toner, in place of your serum step, in the evening.
Unfold the sheet, line it up at the eyes first, then smooth it outward so no air is trapped underneath.
Take it off at the time printed on the pack, pat in the essence left behind, then go straight to your moisturizer.
Two or three evenings a week. Do not leave it on past its time; a sheet that has gone dry takes moisture back off the face as it goes.

1 of 4

40 of 41 explained

Aqua/Water solvent: Water is the base almost every serum, toner and cream is built on. It dissolves the water-loving ingredients and sets how light the finished texture feels. On an INCI list it is usually first, which only means it is the largest single ingredient by weight.
Glycerin humectant: Glycerin is the most used humectant in skincare. It draws water into the outer layer of skin and holds it there, and it is one of the very few ingredients whose hydrating effect is settled science rather than marketing. Higher amounts feel tacky, which is why it is usually blended.
Acrylates Copolymer film former: Acrylates Copolymer is a synthetic polymer that forms a film as the water leaves. It holds a formula in place, controls shine and helps a texture stay put.
Niacinamide active: Niacinamide is vitamin B3, and it is the most studied active in Korean formulation. It is used at roughly 2 to 5 percent for the look of uneven tone and visible pores, and it is water soluble, stable and comfortable beside almost every other active, which is why it turns up in so many lists.
1,2-Hexanediol humectant: 1,2-Hexanediol is a glycol used for two reasons: it holds water like glycerin, and it makes a formula harder for microbes to live in, so less traditional preservative is needed. Korean formulas use it heavily for that second reason.
Ceratonia Siliqua (Carob) Gum thickener: Carob Gum is a seed polysaccharide from the carob tree. It thickens a formula and gives a soft, cushioned body.
Chondrus Crispus plant extract: Chondrus Crispus is Irish moss, a red seaweed. It is loaded with carrageenan, so it hydrates and thickens at once, and it leaves a cushioned, slippery film.
Agar thickener: Agar is a seaweed polysaccharide that sets into a firm gel. It is the gelling agent behind jelly masks and thick sleeping packs.
Sclerotium Gum thickener: Sclerotium Gum is a fungal polysaccharide thickener. It gives a smooth, non-stringy gel and holds an emulsion stable.
Potassium Chloride mineral: Potassium Chloride is a mineral salt used to bring a formula closer to the salt balance of skin, most often as part of a sea-water or mineral-water blend.
Sucrose humectant: Sucrose is table sugar, used here as a humectant. It draws water into the outer layer of skin and, in a scrub, doubles as the physical grain.
Butylene Glycol humectant: Butylene Glycol is a small glycol that does two jobs at once: it holds water in the top layer of skin and it dissolves plant extracts and actives that plain water cannot. It also thins a formula, which is why watery Korean essences lean on it.

28 more explained

Sodium Hyaluronate humectant: Sodium Hyaluronate is the salt of hyaluronic acid, and it is what most products labelled hyaluronic actually contain. The salt dissolves more readily and the molecule is smaller, so it sits in the outer layer of skin rather than only on top of it.
Cellulose Gum thickener: Cellulose Gum is plant cellulose modified to dissolve in water. It thickens, holds particles in suspension and gives a smooth, slippery body.
Polyglyceryl-10 Laurate emulsifier: Polyglyceryl-10 Laurate is a sugar-derived emulsifier and solubiliser, mild enough to be a standard choice in Korean essences. It dissolves small amounts of oil into water without any tightening feel.
Panthenol humectant: Panthenol is pro-vitamin B5: skin converts it to pantothenic acid. It is a humectant that holds water and leaves skin feeling soft and less tight, and it is one of the ingredients formulators reach for when a formula also contains something harsh.
Allantoin active: Allantoin is a comfrey-derived compound used to condition skin and soften the outer layer so it feels smoother. It is one of the standard additions to a formula built for easily irritated skin.
Xanthan Gum thickener: Xanthan Gum is a polysaccharide made by fermenting sugar. It thickens a watery formula into a gel and holds the whole thing in suspension so nothing separates. Too much of it and a serum turns stringy, which is why it appears in fractions of a percent.
Ethylhexylglycerin preservative booster: Ethylhexylglycerin softens skin and boosts a preservative system, which is why it is nearly always sitting beside phenoxyethanol or 1,2-hexanediol. It also cuts down the odour bacteria produce, so it turns up in deodorising products.
Adenosine active: Adenosine is a nucleoside that Korea's own cosmetic authority recognises as a wrinkle-care functional ingredient, which is why it appears on so many Korean lists at a low level. It is used for the look of fine lines and is stable and well tolerated.
Coptis Japonica Root Extract plant extract: Coptis Japonica is a traditional East Asian medicinal root, bright yellow from its berberine content. In skincare its extract is used for the look of congested, oily skin.
Sodium Phytate chelator: Sodium Phytate is a rice-derived chelator used in place of EDTA. It ties up trace metals so the formula stays stable and its colour and scent hold.
Sodium DNA active: Sodium DNA is the salt of DNA, in Korean skincare almost always salmon derived, and it is the ingredient behind the PDRN category. It is used as a humectant and for the look of tired skin; the fragments themselves are what the name PDRN refers to.
Alpha-Arbutin active: Alpha-Arbutin is a plant-derived compound, related to the sugar-bound form found in bearberry, used for the look of dark spots and uneven tone. It is stable in water and works at skin-friendly pH.
Cyanocobalamin vitamin: Cyanocobalamin is vitamin B12, and it is a deep pink-red, which is why a formula carrying it often has a colour nobody added on purpose. It is used as a conditioning vitamin.
Lactobacillus Ferment ferment: Lactobacillus Ferment is the liquid left after lactobacillus bacteria have fermented a plant or milk substrate. It carries the small molecules the fermentation produced, including lactic acid and amino acids, and is used for the look of dull, uneven skin.
Hydrolyzed Collagen protein: Hydrolyzed Collagen is collagen broken into fragments small enough to dissolve in water. It cannot become collagen in skin; what it does is hold water at the surface and leave a smooth, conditioned film.
Centella Asiatica Extract plant extract: Centella Asiatica is the plant behind the whole cica category, sold as gotu kola or Madagascar centella. Its extract is the anchor of Korean formulas built for easily reddened skin, and its work is done by four triterpenes: asiaticoside, madecassoside, asiatic acid and madecassic acid.
Caprylyl Glycol preservative booster: Caprylyl Glycol is a glycol that conditions skin and, more importantly, strengthens a preservative system so less of the traditional preservative is needed. It appears in most modern formulas built without parabens.
Hydroxypropyltrimonium Hyaluronate humectant: Hydroxypropyltrimonium Hyaluronate carries a positive charge, and skin carries a slight negative one, so it is attracted to the surface and stays through rinsing. It is the hyaluronic used where a formula gets washed off.
Hydrolyzed Hyaluronic Acid humectant: Hydrolyzed Hyaluronic Acid is hyaluronic acid cut into much shorter fragments. The smaller the fragment, the further into the outer layer it can settle, which is why serums stack several sizes together instead of using one.
Hyaluronic Acid humectant: Hyaluronic Acid is a sugar chain the body already makes, and one gram of it can hold several litres of water. In a formula it is a humectant that pulls water to the surface of skin and holds it in a film, which is what makes skin look plumper while it is there.
Potassium Hyaluronate humectant: Potassium Hyaluronate is another salt of hyaluronic acid, used for the same reason as the sodium form: it dissolves easily and holds a large amount of water in the outer layer of skin.
Sodium Hyaluronate Crosspolymer humectant: Sodium Hyaluronate Crosspolymer is hyaluronic acid linked into a mesh. It holds water in a soft gel on the surface rather than sinking in, and it releases that water slowly through the day.
Tocopherol antioxidant: Tocopherol is vitamin E. It is an oil-soluble antioxidant that protects the oils in a formula from going rancid and works on skin as an emollient, and it is regularly paired with vitamin C because each keeps the other going for longer.
Acetyl Hexapeptide-8 peptide: Acetyl Hexapeptide-8 is a six-amino-acid peptide used for the look of expression lines, particularly around the eyes. It is the peptide sold under the name Argireline and is water soluble and stable.
Propanediol humectant: Propanediol is a plant-derived glycol used in place of propylene glycol. It hydrates, carries actives into solution, and gives a lighter, less sticky slip than glycerin at the same strength.
Pentylene Glycol humectant: Pentylene Glycol hydrates and, like the other longer-chain glycols, makes a formula less hospitable to microbes so the preservative system can be lighter. It also improves how evenly a product spreads.
Sodium Acetylated Hyaluronate humectant: Sodium Acetylated Hyaluronate is hyaluronic acid modified to be part oil-loving, so it clings to skin instead of rinsing away. Formulators call it the one that stays put.
Hydrolyzed DNA active: Hydrolyzed DNA is DNA cut into short fragments so it dissolves and spreads. It is the same ingredient family as sodium DNA and polydeoxyribonucleotide, the one Korean formulas market as PDRN.

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Inside the formula

Ingredients declared

No fragrance

on the list

4Niacinamide17Allantoin20Adenosine23Sodium DNA

4Niacinamide
17Allantoin
20Adenosine
23Sodium DNA

Where each key active sits on the declared ingredient list, by entry number. Position is proportion: the further forward, the larger its share.

Worth knowing

Patch test this sheet mask on a small area and wait a day before using it more widely, especially with Sodium DNA on the list.
Introduce this sheet mask on its own for the first week, so anything your skin does is traceable to the Sodium DNA rather than to three changes at once.

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Cosrx 5 PDRN Hyaluronic Acid Vital Hydrating Hydrogel Mask

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COSRX, Korean-market original

The Original Korean Formula sheet mask from COSRX, 1ea formulated with Sodium DNA and Niacinamide, shipped from California or direct from Korea.

Verify your unit when it arrives

Korean-market stock with the original barcode and batch code intact, exactly as it left Korea.

COSRX verifies units itself. Find the verification page on cosrx.com and enter the batch number and expiration date printed on your unit. Read them off the package rather than from us, which is the point.

Source: COSRX FAQ

On the unit itself

The Korean-market barcode, unaltered from the retail package.
The manufacturer’s batch code, exactly as the maker printed it.

정품Genuine article, Korean-market stock

What professionals say

What skin-care professionals say about the key actives in this formula, quoted from the medical sources linked beside each.

Allantoin can tone down the dryness of the individual cells. It increases the water content of the skin, which means it helps to hydrate and moisturize.
Wilma Bergfeld, MDDermatologist, Cleveland Clinic
It's still a very new ingredient in the field of regenerative medicine.
Catherine ChangBeverly Hills board-certified plastic and reconstructive surgeon, Harper's Bazaar

1 more professional perspective

Niacinamide helps reduce the appearance of pores in a few ways. By strengthening the skin barrier and improving elasticity, pores appear less noticeable and more even.
Ashlyn YankeAesthetician, Cleveland Clinic