COSRX Hydrium Water Wave — Masque Hydratant Triple H.A.

This mask combines three forms ofhyaluronic acid for multi-level hydration of the epidermis.

Sodium Hyaluronate : with a high molecular weight, it forms an invisible protective film on the surface and limits skin dehydration throughout the day.

Hydrolyzed Hyaluronic Acid : broken down into micro-molecules, it penetrates the deeper layers, improves tissue elasticity, and gives a plumped appearance from within.

Hyaluronic Acid : with an intermediate molecular weight, it ensures the transition between surface and depth, maintains suppleness, and retains up to 1000 times its weight in water.

Panthenol (Provitamin B5): a soothing reference, it calms redness, accelerates cell regeneration, and strengthens the weakened skin barrier.

Centella Asiatica Extract : rich in asiaticoside, this botanical extract reduces inflammation, promotes healing, and soothes reactive or overheated skin.

☀️ Morning routine

1. Cleanse your face with a gentle gel, then apply your usual lotion
2. Unfold the mask over your entire face, smoothing it out to remove air bubbles
3. Leave on for 15 to 20 minutes (ideal while you prepare your coffee)
4. Remove the mask, then pat the excess serum until fully absorbed
5. Follow with your moisturizer to seal in the active ingredients

🌙 Evening routine

1. After double cleansing and toner, apply the mask on clean, dry skin
2. Enjoy these 20 minutes to relax (the mask has an immediate refreshing effect)
3. Gently massage the remaining serum onto your face, neck, and even décolleté
4. Finish with your night care to extend overnight hydration

Recommended frequency: 2 to 3 times a week for an intensive treatment, or daily if your skin is very dehydrated (the biodegradable fabric allows guilt-free ecological use).

This mask is suitable for several skin types:

• Chronically dehydrated skin : if your skin feels tight upon waking despite using your cream, this multi-molecular weight hydration shot restores water reserves
• Tired and dull skin : after a long-haul flight, a short night, or exposure to cold, the mask instantly restores radiance and a plumped appearance
• Reactive sensitive skin : the panthenol-centella combination soothes diffuse redness and reduces discomfort
• Mature skin losing density : hydrolyzed hyaluronic acid penetrates deeply to temporarily fill dehydration fine lines
• All skin types looking for an eco-friendly mask : the 100% biodegradable fabric naturally breaks down, unlike traditional synthetic masks

Avoid if : you have a known allergy to any of the ingredients (forearm test recommended). If your skin is very oily, use it in the evening to avoid an overly shiny finish during the day.

From the first application, the complexion visibly appears plumped and the tight feeling disappears. The ultra-light watery texture of the serum absorbs quickly without leaving a sticky film.

After 15 minutes of application, the skin shows an immediate bounce: it feels supple to the touch, dehydration fine lines are temporarily smoothed, and radiance is restored. The refreshing effect of the mask also relieves tired features.

Used 2 to 3 times a week for a month, it sustainably improves the epidermis's water retention capacity, strengthens the skin barrier, and reduces sensitivity to external aggressions (wind, heating, air conditioning).

The individual 20ml format contains a generous dose of serum: after removing the mask, there is enough product left to massage the face, neck, and décolleté, maximizing value.

What is the difference between this mask and the Hydrium Triple Hyaluronic ampoule?

The sheet mask delivers intense, targeted hydration in 15-20 minutes, perfect for a quick glow boost. The ampoule, on the other hand, is integrated into your daily routine as a leave-on treatment before your cream. Both share the same triple hyaluronic acid philosophy, but the mask offers an immediate "boost" effect thanks to the occlusion of the fabric, which enhances the penetration of active ingredients.

How many times a week can I use this mask?

For normally hydrated skin: 1 to 2 times per week is enough. In cases of severe dehydration (post-peeling, harsh winter, airplane travel): you can use it daily for 7 to 10 days without risk of overload, as hyaluronic acid does not cause buildup. The biodegradable fabric makes this frequency environmentally acceptable.

Is the mask suitable for oily or combination skin?

Yes, absolutely. Even oily skin can be dehydrated (lack of water ≠ excess sebum). Hyaluronic acid hydrates without adding oils. If you fear a too shiny finish, apply the mask in the evening and adjust the amount of residual serum you pat on according to your T-zone.

Can I recycle or compost the mask after use?

The fabric is biodegradable, meaning it naturally breaks down in a suitable environment (well-managed industrial or home compost). Rinse it with clear water before composting to remove serum residues. The sachet packaging should be disposed of according to local plastic recycling guidelines.

Does the mask contain alcohol or fragrance?

Yes, the formula contains alcohol (Alcohol) as the third ingredient in the INCI list, used as a solvent and rapid penetration agent. The concentration remains moderate and is balanced by panthenol and centella. Eucalyptus essential oil (Eucalyptus Globulus Leaf Oil) provides a light natural fragrance. If your skin is ultra-sensitive to alcohol, do a patch test on your neck before full application.

How long can I keep an opened sachet?

The mask is sold in a sealed individual sachet designed for single use. Once opened, apply the mask immediately. The residual serum in the sachet can be kept for up to 24 hours in the refrigerator in an airtight container, to be used additionally on the body.

COSRX (a contraction of "Cosmetics" + "RX" as prescription) was founded in 2013, but the brand has actually been collecting data on skin needs since 2002. This decade of listening has shaped its philosophy: short, targeted formulas without unnecessary ingredients, addressing daily issues (acne, dehydration, sensitivity) with measurable effectiveness.

The Hydrium line, launched to treat deep dehydration, is based on the patented Triple Hyaluronic Acid technology: three molecular weights of hyaluronic acid (high, medium, low) for hydration at all levels of the epidermis. The choice of biodegradable fabric for this mask illustrates the brand's recent commitment to more environmentally friendly formulas, without compromising performance.

100% made in South Korea, all COSRX products are cruelty-free and formulated without parabens. The brand favors proven active ingredients (snail mucin, BHA, propolis, hyaluronic acid) at effective concentrations, rather than "hype" marketing.

Discover the full COSRX range

Complete INCI list:

Water, Butylene Glycol, Alcohol, Panthenol, Betaine, 1,2-Hexanediol, Paeonia Suffruticosa Root Extract, Centella Asiatica Extract, Polyglyceryl-10 Laurate, Chamomilla Recutita (Matricaria) Flower Extract, Glyceryl Caprylate, Arginine, Xanthan Gum, Carbomer, Sodium Hyaluronate, Ethylhexylglycerin, Disodium EDTA, Pantolactone, Eucalyptus Globulus Leaf Oil, Hydrolyzed Hyaluronic Acid, Diethylhexyl Sodium Sulfosuccinate, Dipropylene Glycol, Sodium Acetylated Hyaluronate.

Key active ingredients in bold:

• Sodium Hyaluronate : sodium form of high molecular weight hyaluronic acid, surface humectant
• Hydrolyzed Hyaluronic Acid : enzymatically fragmented hyaluronic acid for deep dermal penetration
• Panthenol : provitamin B5, soothing and barrier repairing
• Centella Asiatica Extract : plant extract recognized in dermatology for healing and anti-inflammatory properties
• Chamomilla Recutita Flower Extract : matricaria chamomile, soothing redness and irritation

Formula without parabens, without mineral oils, dermatologically tested. The presence of alcohol (third position) may not be suitable for extremely sensitive skin: prior testing recommended. Eucalyptus essential oil provides a fresh note but may cause allergies in some individuals.