COSRX Hydrium Triple Hyaluronic Moisture Ampoule 40ml

A thick, viscous serum made for skin that's thirsty above all else. No vague promises: three forms of hyaluronic acid, a B5 ingredient listed by its INCI name, and a texture built around one very specific feeling — that tight, uncomfortable pull at the end of the day that even a good moisturizer sometimes can't fix. Apply it before your skin has to ask.

Texture and key ingredients — The serum is built on a triple dose of hyaluronic acid: Sodium Hyaluronate (high molecular weight) lays an invisible protective film on the surface to slow moisture loss; Hyaluronic Acid and Hydrolyzed Hyaluronic Acid (lower molecular weights) reach deeper layers to work on elasticity and bounce. Panthenol — the INCI name for B5 — rounds out the formula with its well-documented soothing and repairing action, suitable for all skin types. Lactobionic Acid and Gluconolactone, two gentle polyhydroxy acids, add to the surface comfort. The texture is deliberately dense, almost a gel-serum: it spreads without leaving a greasy residue and absorbs quickly, with no waiting around.

How to use it — Two to three drops are enough, applied to clean skin, avoiding the eye and lip area. Spread and massage gently until fully absorbed — a quick step with an immediately noticeable softness. This 40 ml format fits naturally into a daily routine, morning or evening, before your moisturizer. It's especially well suited to dry, dehydrated, or flaky winter skin, but its broad tolerance means sensitive skin can adopt it without a lengthy patch-testing phase.

• Three forms of hyaluronic acid (Sodium Hyaluronate, Hyaluronic Acid, Hydrolyzed Hyaluronic Acid) to act at multiple depths within the skin.
• Panthenol (B5) is specifically named as a key active in the Hydrium line for its hydrating, regenerating, and anti-inflammatory properties.
• Dense gel-serum texture, non-greasy finish — ideal for skin that doesn't do well with heavy emollients.
• 40 ml format: designed for a 4-to-6-week course with daily use (2 to 3 drops per application).
• Suitable for all skin types according to the supplier; particularly recommended for dry, dehydrated, and flaky skin.