Triple is a count here, and the count is accurate. COSRX lists Sodium Hyaluronate seventh, Hyaluronic Acid twelfth and Hydrolyzed Hyaluronic Acid thirteenth, and prints all three on the front of the bottle. That is worth stating plainly, because the brand's separately named Hyaluronic Acid 3 Serum uses its figure as a strength instead. What a tally of three does not establish is better hydration. The guidance our own ingredient library cites is explicit that a larger form count proves nothing without a direct comparison between finished products.
Read the order and a fuller picture appears. Only the first hyaluronate sits high. The other two fall below carbomer and the preservative pair, so they are there in small amounts. Much of the water-binding is shared with glycerin in second place, then butylene glycol, dipropylene glycol and methyl gluceth-10, a polyol base doing work the name credits to the acid.
The other half of the front label is pro-vitamin B5. Panthenol sits ninth, and it is the ingredient COSRX names across the whole Hydrium range. Fifteen entries is the complete list: no oil, no butter, no silicone, no alcohol, no fragrance and not one botanical extract.
That last point cuts both ways. Nothing in it is occlusive, so the layer binds water with no lipid to slow its escape. Dry skin and heated rooms want a moisturizer over the top. On oily, dehydrated skin the absence of oil is precisely the reason to reach for it.
Learn moreThree hyaluronates and pro-vitamin B5, on a list of fifteen with no oil, silicone, added scent or plant extract to complicate it.
Helps hydrate and visibly plump the skin.
Pro-vitamin B5 that helps skin hold moisture and feel softer and more comfortable.
Tightness that returns within minutes of cleansing, however much water-based product goes on.
A papery, uneven surface that catches on makeup and refuses to sit smooth.
A face that has turned touchy, stinging at products it used to accept quietly.
Seventh, twelfth and thirteenth on the brand's own list, and all three printed on the bottle itself.
Panthenol, the ingredient COSRX names across its whole Hydrium range, holds water and softens how skin feels.
Nothing occlusive, no silicone, no alcohol, no added scent and no plant extract anywhere on the label.
A watery gel that sinks in fast and leaves room for whichever moisturizer follows it.
Buy these products together
This itemCOSRX Hydrium Triple Hyaluronic Moisture Ampoule 40ml$26.00
1+1 Aquatica UV Defense Sunscreen OTC$46.00
100 Reedle Shot Stick Pouch$11.52Total price: $83.52
This itemCOSRX Hydrium Triple Hyaluronic Moisture Ampoule 40ml$26.001+1 Aquatica UV Defense Sunscreen OTC$46.00100 Reedle Shot Stick Pouch$11.52Total price: $83.52
