COSRX Hydrium Triple Hyaluronic Moisture Ampoule 40ml — Triple HA + 1,000ppm Panthenol, Lightweight Hydrating Serum

COSRX Hydrium Triple Hyaluronic Moisture Ampoule is a lightweight, water-based hyaluronic serum that delivers three sizes of hyaluronic acids plus 1,000 ppm panthenol to boost and lock in skin moisture.

This concentrated ampoule from COSRX is formulated to hydrate, soothe, and support skin elasticity without heavy residue. Designed for layering under moisturizers, it combines sodium hyaluronate, hyaluronic acid, and hydrolyzed hyaluronic acid to target hydration at multiple skin depths while panthenol helps calm and strengthen the skin barrier. The 40 ml bottle is travel-friendly and fits easily into both morning and evening routines.

How does this ampoule hydrate different layers of my skin?

The Hydrium ampoule uses three molecular weights of hyaluronic acid to attract and hold moisture at varying depths. Low-, medium-, and high-molecular-weight hyaluronic acids work together so the formula can hydrate surface cells and help retain moisture in deeper layers for a plumper look.

• Triple hyaluronic blend: sodium hyaluronate, hyaluronic acid, hydrolyzed hyaluronic acid
• Multi-depth hydration: short-, medium-, and long-chain molecules target different skin layers
• Light texture spreads easily for even coverage

Will it feel sticky or heavy under my skincare?

No—this ampoule has a water-gel, viscous serum texture that absorbs quickly and leaves minimal tack. It’s intentionally formulated to layer under creams or sunscreen without pilling, so you can add an intensive moisture boost without altering the finish of subsequent products.

• Water-based, non-greasy consistency
• Fast absorption for layering under moisturizer and SPF
• Leaves no heavy film or sticky residue

What active ingredients should I expect, and how do they help?

Key actives are the three hyaluronic acids and 1,000 ppm panthenol. The hyaluronic components attract and hold water, improving surface hydration and bounce, while panthenol (pro-vitamin B5) soothes irritation and supports barrier recovery—without parabens, sulfates, phthalates, or animal testing.

• High-concentration hyaluronic acids for sustained moisture retention
• 1,000 ppm panthenol to calm and fortify the skin barrier
• Formulated hypoallergenic and dermatologist-tested ingredients

How should I use the ampoule in my routine?

Apply after cleansing and toning, while skin is slightly damp, then follow with a moisturizer to seal in hydration. A few drops are enough—gently press into the face, neck, and décolletage; you can use it both morning and evening depending on your hydration needs.

• Use 2–4 drops on damp skin after toner
• Pat gently; follow with cream or sunscreen
• Suitable for daily use and layering in multi-step routines

Who is this for: The COSRX Hydrium Triple Hyaluronic Moisture Ampoule suits anyone seeking a boost of hydration without heaviness—dry, combination, and sensitive skin types will find it helpful for improving moisture retention and calming irritation. It’s also a practical addition for those building an anti-aging or barrier-repair regimen who prefer lightweight, cruelty-free, and paraben-free formulations. Keep in mind it’s an additive hydrating serum, not a replacement for SPF or targeted medical treatments.

Ingredients

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