COSRX
5 PDRN Hyaluronic Acid Vital Hydrating Hydrogel Mask$4.70innisfree
Hyaluronic Acid Active Mask 25ml X 5ea
innisfree's Hyaluronic Acid Active Mask lists Sodium Hyaluronate together with Hydrolyzed Hyaluronic Acid and Houttuynia Cordata Extract, left on cleansed skin for a weekly at-home sheet mask treatment.
No reviews yet- Korean-market formula
- Ships from California or direct from Korea
- Korean barcode and batch code intact
- Suited to
- normalcombinationdry
- Helps with
- a weekly at-home treatmentsealing in a concentrated dosea step in place of serum that session
In stock. Arrives in 3 to 7 business days
We accept
You’re $100.00 away from free US shipping.
- 30-day returns
- Free US shipping on orders of $100 or more
- Tracked delivery to your door
How it works
Hyaluronic Acid Active Mask X is a sheet mask, individually packaged and pre-soaked in a treatment liquid. The sheet holds the liquid against the skin for the full time it is left on, rather than letting it evaporate the way a hand-applied serum does. It is used as a once or twice-weekly treatment step, in place of a serum for that session. Once removed, any leftover liquid on the face is patted in rather than rinsed away. It is followed by a moisturizer to seal in what the mask left behind.
Key benefits
- What it is: a mask from innisfree, for the weekly treatment step.
- On the ingredient list: Butylene Glycol, Glycerin, Allantoin, confirmed on this product's own manufacturer list rather than assumed from the category.
- Fits into the routine: holds a concentrated dose of its formula against the skin for the length of one sitting.
- Original Korean Formula: the version sold on Korean shelves, not a US reformulation.
Inside the formula
Inside the formula
How long do I leave Hyaluronic Acid Active Mask X on?
Ten to twenty minutes is the usual range for a sheet mask; take it off before it starts to dry out at the edges. That holds true whichever size or variant of this product you buy, so the same placement in a routine and the same answer apply across the line.
Do I rinse my face after?
No, pat the leftover essence into the skin rather than rinsing it off, then continue with your moisturizer. That holds true whichever size or variant of this product you buy, so the same placement in a routine and the same answer apply across the line.
How often should I use it?
Once or twice a week as a treatment boost works well alongside a regular daily routine. That holds true whichever size or variant of this product you buy, so the same placement in a routine and the same answer apply across the line.
What comes before the mask?
Cleanse and tone first, the same as before applying a serum, since the mask is used in that step's place for the session. That holds true whichever size or variant of this product you buy, so the same placement in a routine and the same answer apply across the line.
How many sheets are in the box?
Check the count on the product page; this line is sold as individually packaged sheets. That holds true whichever size or variant of this product you buy, so the same placement in a routine and the same answer apply across the line.
Not on the ingredient list below: fragrance or parfum, denatured or SD alcohol, essential oils, silicones, parabens, sulfate surfactants, mineral oil or petrolatum and added color.
Full INCI (36): Water/Aqua/Eau, Butylene Glycol, Glycerin, Dipropylene Glycol, 1,2-Hexanediol, Allantoin, Arginine, Carbomer, Polyglyceryl-10 Laurate, Glyceryl Caprylate, Ethylhexylglycerin, Limnanthes Alba (Meadowfoam) Seed Oil, Acrylates/C10-30 Alkyl Acrylate Crosspolymer, Caprylic/Capric Triglyceride, Hydroxyethylcellulose, Styrene/Acrylates Copolymer, Sodium Phytate, Polyglyceryl-3 Methylglucose Distearate, Hydrogenated Lecithin, Methyl Glucose Sesquistearate, Cetearyl Glucoside, Sodium Hyaluronate, Houttuynia Cordata Extract, Melaleuca Alternifolia (Tea Tree) Extract, Artemisia Princeps Leaf Extract, Tocopherol, Polysorbate 60, Disodium Phosphate, Hydroxypropyltrimonium Hyaluronate, Sodium Phosphate, Hydrolyzed Hyaluronic Acid, Sodium Acetylated Hyaluronate, Hyaluronic Acid, Sodium Hyaluronate Crosspolymer, Hydrolyzed Sodium Hyaluronate, Potassium Hyaluronate
Ingredient list read from incidecoder.com on 10 September 2026.
32 of 36 explained
- Water/Aqua/Eau 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.
- 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.
- 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.
- Dipropylene Glycol humectant
- Dipropylene Glycol is a glycol used as a solvent and a light humectant. Its main job is keeping the rest of the formula dissolved and the texture fluid rather than adding hydration of its own.
- 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.
- 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.
- Arginine amino acid
- Arginine is an amino acid that does two jobs here: it holds water in the outer layer of skin, and it neutralises acidic gelling agents, which is why it often stands in for a synthetic pH adjuster.
- Carbomer thickener
- Carbomer is a synthetic polymer that only gels once a base neutralises it, which is why arginine or tromethamine sits nearby on the list. It gives the clear, non-stringy gel texture a xanthan formula cannot reach.
- 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.
- Glyceryl Caprylate emulsifier
- Glyceryl Caprylate is a mild emulsifier that also makes a formula less hospitable to microbes, so it is often part of a preservative-free system.
- 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.
- Limnanthes Alba (Meadowfoam) Seed Oil emollient
- Meadowfoam Seed Oil is over 95 percent long-chain fatty acids, which makes it exceptionally stable against going rancid. It is an emollient that leaves a soft, sealed feel.
20 more explained
- Acrylates/C10-30 Alkyl Acrylate Crosspolymer thickener
- This is a carbomer relative with fatty side chains, so it thickens and stabilises an emulsion at the same time. It gives a light gel-cream body rather than a heavy one.
- Caprylic/Capric Triglyceride emollient
- Caprylic/Capric Triglyceride is the light fraction of coconut oil, with the heavy parts removed. It is the workhorse emollient of modern formulas: it softens skin, dissolves oil-soluble actives and absorbs without the greasy weight of a whole plant oil.
- Hydroxyethylcellulose thickener
- Hydroxyethylcellulose is a cellulose thickener that builds a clear, smooth gel and holds the rest of the formula in suspension.
- 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.
- Polyglyceryl-3 Methylglucose Distearate emulsifier
- Polyglyceryl-3 Methylglucose Distearate is a sugar-derived emulsifier known for a light, non-soapy feel. It builds gel-creams that do not read as rich.
- Hydrogenated Lecithin emulsifier
- Hydrogenated Lecithin is lecithin with its unsaturated bonds filled in, which makes it far more stable. It emulsifies and is the standard shell for the liposomes that carry actives into the outer layer of skin.
- Cetearyl Glucoside emulsifier
- Cetearyl Glucoside is a sugar-derived emulsifier used to hold oil and water together in creams with a light finish.
- 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.
- Houttuynia Cordata Extract plant extract
- Houttuynia Cordata is heartleaf, and it is one of the two or three anchor plants of Korean calming skincare. Its extract carries quercitrin and other flavonoids and is used for the look of redness and blemish-prone skin.
- Melaleuca Alternifolia (Tea Tree) Extract plant extract
- Tea Tree Leaf Extract is the water-based extract rather than the essential oil, so it is far milder and much less aromatic. It is used in formulas for blemish-prone skin.
- Artemisia Princeps Leaf Extract plant extract
- Artemisia Princeps is Korean mugwort, one of the country's oldest skincare and bathing plants. Its leaf extract is used for the look of reddened, reactive skin, and it is the ingredient behind the mugwort category.
- 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.
- Polysorbate 60 emulsifier
- Polysorbate 60 is a water-loving emulsifier used with a fatty co-emulsifier to build stable lotions and creams.
- Disodium Phosphate pH adjuster
- Sodium Phosphate is a buffer salt. It holds a formula at a steady pH so its actives stay in the form they work in.
- 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.
- 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.
- 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.
- 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.
- 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.
- Market
- Korean market, the version sold in Korea
- EAN (barcode)
- 8809843677361
- Made in
- Republic of Korea
- Category
- Mask
- Actives
- Allantoin, Heartleaf (Houttuynia Cordata), Hyaluronic Acid, Mugwort, Sodium Hyaluronate, Tea Tree
- Ships from
- California or Korea
Orders ship from California or direct from Korea with tracked delivery to your door, and both routes carry the same Korean-market release. Shipping is free on orders of $100 or more. Returns are accepted for 30 days, by mail.
We split shipments free, so one out-of-stock item never holds up the rest of your order.
Where this unit came from
- 1Seoul
Bought as Korean-market stock - 2Barcode
Listed against the Korean barcode on its box - 3California or Korea
Ships to you from either, as the same Korean-market release
We stock the version of a formula that is sold in Korea, not the release a brand prepares for another market under the same name. The barcode in the specification above is the Korean-market one and it is printed on the box you receive.
Every unit keeps its original barcode and batch code intact, so the unit in your hands can be checked against the brand’s own records.
Every order ships from California or direct from Korea, and returns run for 30 days.
Every claim on this page traces to the unit in the box, the barcode, the batch code and the price you can read for yourself.
How to use
- After cleansing and toner, unfold the sheet and smooth it onto the face, pressing out air bubbles. Leave it on for ten to twenty minutes, then remove it and pat the remaining liquid into the skin before your moisturizer.
Worth knowing
- Do not rinse the leftover liquid off; pat it in instead of washing it away.
- Leave it on for the stated time rather than longer, since an over-long sheet mask can start pulling moisture back from the skin.
Complete the routine
- This iteminnisfree Hyaluronic Acid Active Mask 25ml X 5ea$30.00

- From the same Korean-market lineinnisfree My Hair Recipe Strength Shampoo 330ml$17.50

- The treatment step of this routineinnisfree My Hair Recipe Strength Tonic Essence 100ml$15.00

Total for 3 items$62.50
Reviews
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innisfree Hyaluronic Acid Active Mask 25ml X 5ea
How it felt, how your skin took it, what you layer it with. Straight answers help the next person choose.
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innisfree, Korean-market original
Hyaluronic Acid Active Mask 25ml X 5ea from innisfree: a mask in the Original Korean Formula, not the US-shelf version.
Verify your unit when it arrives
Verify your unit when it arrives
Korean-market stock with the original barcode and batch code intact, exactly as it left Korea.
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 professionals say
What skin-care professionals say about skin care, quoted from the medical sources linked beside each.
Your skin barrier is basically your outer layer of the skin.
Melissa Piliang, MDDermatologist, Cleveland Clinic Pretty much every step of a Korean skin care routine is going to have some component of hydration.
Alok Vij, MDDermatologist, Cleveland Clinic
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