COSRX
Hydrium Triple Hyaluronic Moisture Ampoule
A viscous hydration ampoule carrying three hyaluronic forms with gluconolactone and lactobionic acid for a supple, plumped look.
No reviews yet40ml
$64.98 per 100 ml
- Korean-market formula
- Ships from California or direct from Korea
- Korean barcode and batch code intact
- Suited to
- DryDehydratedSensitiveCompromised barrier
- Helps with
- DehydrationBarrier weaknessRough surface textureVisible redness and reactivity
Sold out.
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- 30-day returns
- Free US shipping on orders of $100 or more
- Tracked delivery to your door
How it works
Skin stripped by actives or dry indoor air feels tight rather than simply dry. A heavy cream alone can sit on top without solving that. This ampoule instead layers three hyaluronic forms, sodium hyaluronate, hyaluronic acid and hydrolyzed hyaluronic acid, alongside panthenol and two mild acids, gluconolactone and lactobionic acid, to hold water at the surface. Skin feels cushioned rather than tight between other steps with repeated use. Apply to damp skin after toner and seal it in with a moisturizer.
How to use
- Use the Hydrium Triple Hyaluronic Moisture Ampoule after toner and before moisturizer, morning and evening.
- A few drops pressed over the face and neck with flat palms rather than rubbed around.
- Toner first, this second, then a cream over the top within a minute while the layer is damp.
- Twice a day, every day. Do not leave it as the last layer; a water step with nothing over it dries off and takes the water with it.
COSRX Hydrium Triple Hyaluronic Moisture Ampoule
What is the Hydrium Triple Hyaluronic Moisture Ampoule meant to do for skin?
This ampoule leads with water, glycerin and butylene glycol, then carries three separate hyaluronic forms further down the list: sodium hyaluronate, hyaluronic acid itself and hydrolyzed hyaluronic acid, each a different molecular weight, which changes how the moisture is held at the surface. Panthenol sits alongside them for comfort, while gluconolactone and lactobionic acid, both PHA-class humectant acids, close out the list. Together the formula is built to hold water at the surface rather than to resurface or brighten.
Is this ampoule suitable for reactive or fragrance-sensitive skin?
Fragrance, essential oil and added colourant are all absent from the ingredient list, and there is no silicone or denatured alcohol in the formula either, which matters for anyone who reacts to scent or a filmy finish on the skin. Sulfate surfactants and mineral oil are also missing, since this is a leave-on ampoule rather than a cleanser. That does not make it hypoallergenic, but the list itself carries none of the usual irritant flags.
Will results build gradually or show up overnight?
Hydration from humectants like the hyaluronic forms here works by holding water already present in the upper layers, so the plumped, cushioned look tends to read within the same use and then compounds with consistent daily application over weeks. It is not a formula built around a single dramatic change, and skipping days will show up as skin feeling thirstier again rather than as lost progress. This is an ongoing daily habit rather than a one-time fix.
Can I layer this ampoule with a brightening serum or SPF?
The ampoule's own list is limited to hydrators, humectant acids and panthenol, with nothing on it that would conflict with a separate vitamin C or sunscreen step, though every combination should be judged by what is actually on each product's own label rather than assumed. A common order is toner, this ampoule while skin is still damp, then any treatment serum, moisturizer and sunscreen last in the morning. Patch test any new pairing first.
How can I tell this is the real Korean-market Hydrium formula and not a US repackage?
This unit carries its original Korean-market barcode, 8809598450653, intact on the box rather than a US sticker over it. COSRX runs its own verification rather than leaving it to any seller: open the batch check page on cosrx.com and type in the batch number and expiration date printed on your unit, reading them straight off the package rather than taking a seller's word for it. That check is the same one COSRX offers every buyer of this ampoule.
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 (15): Water, Glycerin, Butylene Glycol, Dipropylene Glycol, 1,2-Hexanediol, Methyl Gluceth-10, Sodium Hyaluronate, Carbomer, Panthenol, Tromethamine, Ethylhexylglycerin, Hyaluronic Acid, Hydrolyzed Hyaluronic Acid, Gluconolactone, Lactobionic Acid
Ingredient list read from incidecoder.com on 9 September 2026.
15 of 15 explained
- 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.
- 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.
- 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.
- Methyl Gluceth-10 humectant
- A sugar-derived humectant, the lighter counterpart of methyl gluceth-20. It holds water and gives a smooth, non-tacky slip.
- 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.
- 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.
- 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.
- Tromethamine pH adjuster
- Tromethamine neutralises acidic thickeners such as carbomer so they gel, and holds a formula near skin-friendly pH. It is used at a fraction 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.
- 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.
3 more explained
- 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.
- Gluconolactone exfoliant
- Gluconolactone is a PHA, the gentlest exfoliant class. Its molecule is too large to penetrate quickly, so it smooths the surface without the sting of an AHA, and it is a humectant at the same time.
- Lactobionic Acid exfoliant
- Lactobionic Acid is a polyhydroxy acid, the gentlest of the acid families because the molecule is large and slow to travel. It is also a strong humectant.
- Market
- Korean market, the version sold in Korea
- EAN (barcode)
- 8809598450653
- Made in
- Republic of Korea
- Volume
- 40ml
- Category
- Serum & Ampoule
- Actives
- Hyaluronic Acid, Panthenol, Sodium Hyaluronate
- 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.
Key benefits
- Three hyaluronic entries, from full-size to hydrolyzed, share the load
- Gluconolactone and lactobionic acid add a mild PHA-class polish
- Panthenol keeps the formula comforting for reactive skin
- A viscous texture that leaves skin supple, not sticky
Inside the formula
Inside the formula
Reviews
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COSRX Hydrium Triple Hyaluronic Moisture Ampoule
How it felt, how your skin took it, what you layer it with. Straight answers help the next person choose.
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COSRX, Korean-market original
Triple hyaluronic ampoule, 40 ml, with Panthenol and Gluconolactone.
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.
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 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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