COSRX HYDRIUM TRIPLE HYALURONIC WATER WAVE SHEET MASK

Values You Can Trust: 100% Genuine (Adilsons sourcing policy). We are not adding a Fragrance-Free or FA-Safe badge to this product — see the Allergens and FA-safety sections below for why.

Pros: intense, fast hydration; convenient single-use sterile format; good for a quick "reset" after sun or heat exposure.

Caveats: not fragrance-free (contains Eucalyptus Globulus Leaf Oil and its Limonene/Linalool constituents); contains plain Alcohol relatively early in the ingredient list; not a daily-use product.

This is bedside-compatible in the sense that it requires no rinsing and no precise dosage — unfold, apply, lie down. The one thing it does need is a dedicated 10-20 minute wait, so it suits a slow evening more than a 60-second routine.

Minimum viable routine: cleanser → this mask (10-20 min) → pat in remaining essence → whatever moisturizer you already own. On a genuinely low-energy day, skipping the mask entirely and using a leave-on serum instead is a reasonable substitute.

Step 1 (When): AM or PM, occasional use (1-3x per week, not daily). Step 2 (How much): one full sheet. Step 3 (How): unfold onto cleansed skin, leave 10-20 minutes, remove and pat in the remaining essence.

Introduce this as the ONLY new product in your routine. Wait a full 14 days before adding anything else. This isolation window ensures you can identify whether any reaction is caused by this specific product.

This product is typically used as an occasional treatment, not a daily AM step. If used in the morning: 1) Cleanser → 2) Sheet mask, 10-20 minutes → 3) Pat in remaining essence → 4) Sunscreen SPF50+ PA++++.

Leave at least a few minutes after removing the mask before applying sunscreen, so the essence has time to settle rather than sitting under SPF as a wet film.

1) Double cleanse if wearing sunscreen/makeup → 2) Hydrating toner (optional) → 3) Sheet mask, 10-20 minutes → 4) Pat in remaining essence → 5) Moisturizer or facial oil to seal.

This is a good choice on a night you are deliberately taking a recovery break from actives (see the 4-night skin-cycling recovery nights in the Routine Encyclopedia below), rather than a night carrying a retinoid or acid.

Technique: unfold onto clean, dry or slightly damp skin, smooth from center outward, and leave for 10-20 minutes. Remove and pat (do not rub) the remaining essence into skin — do not rinse it off.

Extra tip: storing the sealed sachet in the refrigerator for a few minutes before use adds a cooling effect that can help calm overheated skin after sun exposure.

This is an encyclopedia map of all product types. You do not use all of these daily. You select modules based on your skin state.

Global rules: viscosity ladder thinnest to thickest, water-phase before oil-phase, treatments before seals. Wait-time defaults: watery layers 10-20s; serum layers 30-60s; before sunscreen 10-15 min if going outdoors. Amount defaults: toner/essence 5-8 drops; serum/ampoule 2-3 drops or 1 pump; eye product ½ rice-grain per eye; gel moisturizer 1-1.5 peas, cream 1-2 peas; occlusive seal rice-grain to pea-size; sunscreen 2-finger rule for face, +1 finger for neck. Hard cap rule: if the routine pills, stings, or feels heavy, reduce layers, not increase.

AM Maximum Stack: 1) Rinse/gentle cleanse (optional) → 2) pH-prep toner (optional) → 3) Hydrating toner layers (optional) → 4) Essence (optional) → 5) Mist (optional) → 6) Booster/soothing serum (optional) → 7) Antioxidant lane, choose ONE → 8) Pigment-support lane, choose ONE → 9) Sheet mask slot (occasional swap-in for the hydration serum step) → 10) Oil-control lane, choose ONE → 11) Peptide/repair lane (optional) → 12) Eye product → 13) Moisturizer → 14) Optional sealing layer → 15) Sunscreen SPF50+ PA++++ (non-negotiable) → 16) Lip SPF (optional). In AM, prioritize comfort and SPF adherence over stacking.

PM Maximum Stack: 1) Micellar pre-cleanse (optional) → 2) Oil cleanser if SPF/makeup worn → 3) Water cleanser → 4) pH-prep toner (optional) → 5) Hydrating toner layers (optional) → 6) Essence (optional) → 7) Soothing/barrier serum (optional) → 8) [Anchor active, if any that night] → 9) Sheet mask slot (occasional swap-in, best on a non-active recovery night) → 10) Moisturizer → 11) Sleeping mask (optional, skip if you used this sheet mask) → 12) Occlusive seal (optional) → 13) Spot treatment/patch (as needed) → 14) Lip sleeping mask (optional). Do not layer retinoids with AHA/BHA in the same night; keep "one lane" per night.

Lane strictness: Retinoid OR Exfoliation OR Strong Vitamin C (LAA) OR Acne-control active per routine — this mask is a barrier/hydration step and can accompany any lane, though it works best on a recovery night. If unsure, default to the safest lane (barrier/hydration) and reduce layers.

The essence itself is water-thin, but the sheet format delivers it as an occlusive, concentrated dose rather than a thin layer — functionally it behaves like a serum-plus-brief-occlusive step combined. Apply after cleansing (and toner, if used) and before your moisturizer.

Phase compatibility: water-phase; it layers cleanly under any moisturizer or facial oil applied afterward.

Before starting this product, no specific prerequisite step is required, though a patch test matters more here than for a typical fragrance-free hydrator because of the alcohol and eucalyptus oil content.

Dehydration and dullness: the triple-HA complex binds water at the surface for an immediate plumping effect, and Centella Asiatica Extract adds a mild soothing/calming layer. Occasional heat/sun recovery: chilled before use, the mask can help take the edge off overheated skin after a day outdoors.

What this product cannot do: it cannot replace a daily moisturizer, treat active acne, or fade pigmentation — it is a short-term, occasional hydration boost, not a daily-use treatment.

Cleanser (before masking): primary — Anua Heartleaf Succinic Cleansing Foam 150ml. Alternatives: SKIN1004 Madagascar Centella Poremizing Deep Cleansing Foam 125ml, Anua Heartleaf Quercetinol Pore Deep Cleansing Foam 150ml, COSRX Low pH Good Morning Gel Cleanser 150ml.

Moisturizer to seal (after masking): primary — Isntree Hyaluronic Acid Aqua Gel Cream 100ml. Alternatives: SKIN1004 Madagascar Centella Poremizing Light Gel Cream 75ml, Beauty of Joseon Red Bean Water Gel 100ml, THE FACE SHOP Jeju Aloe Fresh Soothing Gel.

Pilling pairs: pilling risk is low for this format since the sheet delivers essence directly; the only risk is layering a heavy silicone primer immediately after patting in the essence without a brief wait.

Water-Permeable (wudu-compatible): once the residual essence has been patted in and absorbed, it does not form a waterproof film, so water reaches the skin normally during ablution.

Adilsons provides this assessment based on the product's physical properties. Rulings on wudu validity vary between scholars. Consult your own trusted Islamic authority.

MYTH: "Sheet masks are just marketing — a serum does the same thing." REALITY: the occlusive sheet format holds essence against skin for a sustained 10-20 minutes, which improves penetration of the humectants compared to a quick splash-on application, even with an identical essence.

MYTH: "A DIY cotton-soaked-in-toner mask is the same thing." REALITY: a formulated, sterile single-use sheet avoids the bacterial-contamination risk of reusing fabric or cotton at home, and delivers a standardized dose rather than a guessed one.

AC environment warning: in air-conditioned environments, the hyaluronic acids in the residual essence can draw moisture FROM your deeper skin layers instead of from the air. Always seal with a moisturizer after removing the mask if you'll be in AC for extended periods.

Full INCI (as verified via INCIDecoder): Water, Butylene Glycol, Alcohol, Panthenol, Betaine, [--- Estimated 1% Line ---] 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.

Note on our own listing: an earlier version of this description on our site stated a different ingredient list (including "Alcohol Denat", a separate "Fragrance" entry, and other ingredients not shown above). This listing has been corrected to match what an independent ingredient-database lookup shows; treat the list above as the current, verified version.

Preservative system: Ethylhexylglycerin, Glyceryl Caprylate, and 1,2-Hexanediol function as mild preservative-boosting agents rather than classic parabens.

Fragrance status: not fragrance-free — no ingredient is literally named "Fragrance"/"Parfum," but Eucalyptus Globulus Leaf Oil is an aromatic essential oil that carries its own natural scent and allergen potential. Scent: a light, fresh eucalyptus-adjacent note. Intensity/dissipation: mild, dissipates within a few minutes of removing the mask.

EU 26 allergen screen: none of the 26 named allergens are separately declared in this INCI, but essential oils like Eucalyptus Globulus can contain undeclared trace allergen constituents — patch test advised for anyone with a known fragrance sensitivity.

Alcohol disclosure: contains plain Alcohol (not denatured) at INCI position 3 — earlier in the list than is typically comfortable for very reactive or rosacea-prone skin, though the brand does not disclose the exact percentage.

Halal status: Halal-Friendly*. *Self-assessed by Adilsons based on available INCI data. No porcine-derived ingredients and no haram animal-derived ingredients detected in the declared ingredient list. This is NOT a formal Halal certification. Muslims with stricter requirements should consult their own scholars, particularly regarding the ethanol-type "Alcohol" present in this formula.

Vegan status: Vegan-Friendly*. *Self-assessed by Adilsons based on available INCI data. No animal-derived ingredients detected. This is NOT a formal vegan certification by The Vegan Society or equivalent body.

Cruelty-free status: Uncertified*. *Brand-stated policy. Not independently certified by Leaping Bunny, PETA, or equivalent third-party audit. *Brand states cruelty-free, but sells products in Mainland China where post-market animal testing may be required by law. Cross-border e-commerce sales may be exempt.

Microplastic-Free: Yes — no polymer microbead or film-forming plastic detected in the declared INCI.

MFDS classification: General Cosmetic — no functional-cosmetic claim was found for this product. Clinical evidence: no product-specific clinical trial was located; "instant moisture boost" is brand marketing language built on the well-established mechanism of hyaluronic acid, not a study on this exact formula.

Evidence confidence: Marketing-Only*. *Brand claims are based on ingredient rationale; no publicly available clinical dataset exists for this specific product.

FA safety: FA-Conditional — Polyglyceryl-10 Laurate is flagged by some (not all) community fungal-acne trackers as conditional; individual response varies.

Assessment: Low. The watery essence absorbs cleanly; pilling risk only appears if a heavy silicone-based product is applied immediately after patting in the residual essence without a brief wait.

Color baseline: the essence should be clear to very faintly tinted; any strong discoloration or off smell before opening means the sachet should be discarded rather than used. Storage: keep sachets away from direct sun and bathroom heat/humidity spikes; a bedroom drawer outlasts a steamy bathroom cabinet in Mauritius's climate.

Spoilage signs: a torn or leaking sachet, an off/sour smell, or visible discoloration of the essence. When in doubt, discard.

Patch test: cut a small piece of the sheet, apply to the inner forearm, check at 24h, then behind the ear for another 24h, re-check at 72h, then use on the face. This matters more here than for a typical fragrance-free product because of the alcohol and eucalyptus oil content.

72-hour barrier reset: if an adverse reaction occurs, stop all actives. For 72 hours use only a gentle cleanser, plain moisturizer, and mineral SPF — no acids, retinoids, Vitamin C, exfoliants, or essential oils. After 72h, reintroduce one product per 14 days.

Emergency stop signals: hives, swelling, blistering, persistent burning, or breathing difficulty — seek emergency care.

1) Using it daily instead of the recommended 1-3x/week. 2) Skipping the patch test despite the alcohol/eucalyptus content. 3) Rinsing off the residual essence instead of patting it in. 4) Leaving the mask on far longer than 20 minutes, which can actually dry the sheet out and pull moisture back from skin. 5) Applying makeup immediately without waiting a few minutes for the essence to settle.

Overuse threshold: using it more than 3-4 times a week does not speed up results and increases exposure to the alcohol/eucalyptus content for no added benefit.

Usage math: one sheet per use, single-use only — there is no per-container "uses remaining" calculation the way there is with a bottle. Lifespan: buy multiple sheets to have on hand for a weekly or as-needed cadence rather than a single sachet.

Reorder timing: if using it weekly, plan to reorder a multi-pack roughly 2 weeks before your current supply runs out to allow for delivery time in Mauritius.

This mask's job is an occasional intensive hydration boost; it swaps into the water-based serum slot, after toner and before moisturizer, on the nights or mornings you use it. Leave on 10-20 minutes, then pat in the remaining essence with a 30-60 second wait before your next step.

AM (occasional): cleanser → mask (10-20 min) → sunscreen. PM (occasional, best on a recovery night): cleanser (double if wearing SPF) → mask (10-20 min) → moisturizer.

If you are very reactive or rosacea-prone, patch test before your first full-face use given the alcohol and eucalyptus content. If you are in AC all day, seal the residual essence with a moisturizer so it does not pull water from your own skin. If you are also running a retinoid or acid routine, use this mask on a non-active recovery night rather than the same night as that active.

Bundle — Weekly Hydration Reset: Anua Heartleaf Succinic Cleansing Foam → this mask → Isntree Hyaluronic Acid Aqua Gel Cream.

After purchasing, you will receive our skincare education email series covering this product in depth.

The recommendations above are based on formulation synergy with COSRX Hydrium Triple Hyaluronic Water Wave Sheet Mask, not on margin or stock levels. If a pairing does not exist in our catalog, we say so. If you already own a product that fills the same role, use what you have first.

If you are specifically alcohol- or fragrance-sensitive, a different sheet mask in our catalog may suit you better than this one.

Primary alternative: Anua Birch Moisture Sheet Mask (25ml*1ea) — built on Birch juice and multiple hyaluronic-acid forms, without added essential oils.

Alternatives: Anua Heartleaf 77% Soothing Sheet Mask (better fit if redness/irritation is the primary concern rather than plain dehydration); Beauty of Joseon Centella Asiatica Calming Mask 25ml (centella-forward, calming focus); MISSHA Airy Fit Sheet Mask [Honey] (a lighter, thinner rice-paper format for a quick everyday boost).

Mindful-use: if you already have a comparable sheet mask at home, finish it first to avoid waste and get a fair read on results.

Choose COSRX Hydrium Triple Hyaluronic Water Wave Sheet Mask over Anua Birch Moisture Sheet Mask if you specifically want the "triple hyaluronic" multi-weight positioning and don't mind a mild essential-oil note; choose the Birch alternative if you'd rather avoid Eucalyptus Globulus Leaf Oil entirely.

If your skin is very reactive or rosacea-prone, do not upgrade to this one — the Birch alternative is the safer pick. If you tolerate mild alcohol and essential oils without issue, this product's triple-HA-plus-Centella formula is a reasonable choice.

Timing: both sit in the same occasional-treatment slot, AM or PM, best on a non-active night.

Don't upgrade if: you have known eucalyptus/essential-oil sensitivity or rosacea — same-slot swaps should go to the fragrance-free alternative instead.

If you match the reactive-skin trigger above, choose the Birch alternative. Otherwise, either mask is a reasonable, similarly effective pick.

This product's PRIMARY function is: an occasional, single-use intensive hydration boost. You do NOT need this if you already have a stock of hydrating sheet masks at home — use those first.

Inventory audit: single-use sachets don't expire quickly once sealed, but check the printed expiration date before buying more than you'll realistically use.

Stacking assessment: using this alongside a leave-on HA ampoule or serum on the same day is Marginal Benefit (overlapping mechanism) — pick one per session rather than layering both.

This product is sourced through authorized Korean distributors — primarily Craver Co., Ltd (South Korea), alongside other verified distribution partners. Craver is a major Korean beauty distributor and the parent company of SKIN1004, handling authorized distribution for multiple K-beauty brands. All products are shipped directly to Mauritius via verified channels.

For comprehensive information about how we verify authenticity, our layered verification system, and how to check your product at home, visit our dedicated Authenticity and Trust page.

Check the sachet's printed batch code and expiration date as a quick at-home cue alongside our own verification system.

COSRX (founded 2013, Seoul, South Korea, acquired by Amorepacific Corporation in October 2023) built its identity around a minimal, low-pH, "skin-friendly" formulation ethos — the brand name itself is a portmanteau of "Cosmetics" and "Rx." The Hydrium line, which this mask belongs to, is built around lightweight, gel-textured hydration rather than one single named hero active.

COSRX's flagship line remains its snail-mucin-based Advanced Snail range; Hydrium masks like this one are positioned as an accessible, occasional add-on rather than a daily staple.

Aggregated retailer and beauty-press commentary (COSRX's own site, YesStyle, and general blog roundups) consistently describes strong, immediate hydration and a visible "glass skin" plumping effect right after use, with the eco-friendly cellulose sheet noted as a plus.

We did not surface a specific, quotable Reddit or forum thread for this exact product at the time of writing — the sentiment above reflects retailer and beauty-press commentary rather than individually verified user quotes, so treat it as directional rather than a substitute for your own patch test.

Sustainability: the sheet fabric is described as cellulose-derived rather than pure synthetic fiber; check local guidance before attempting to recycle the foil sachet, as most municipal streams do not accept mixed-material sachets.

Can I use this every day? It is designed for occasional use (1-3x per week), not daily use.

Will it cause breakouts? The formula does not contain classic Malassezia-feeding oils, though Polyglyceryl-10 Laurate is flagged by some community trackers as FA-conditional — individual response varies.

Is it safe during pregnancy? The declared INCI contains no ingredients on the standard pregnancy-caution list, but always check with your own doctor before adding any new skincare product during pregnancy.

Why does it contain alcohol and eucalyptus oil if it's marketed for hydration? Both function as part of the sensory/preservation profile rather than the hydrating mechanism itself; they are the main reason this product is not marketed as fragrance-free.

Can I refrigerate it? Yes — many users chill the sealed sachet briefly before use for an added cooling effect.

Humectant

An ingredient that attracts and holds water in the skin.

Hyaluronic Acid

A humectant capable of holding many times its weight in water.

Panthenol

Pro-vitamin B5; soothes and supports the skin's barrier-repair process.

EU 26 allergens

A list of 26 fragrance-related substances the EU requires cosmetics to disclose above a certain concentration.

FA-Conditional

Fungal-acne-conditional; an ingredient some, but not all, community trackers flag as potentially feeding Malassezia yeast.

Sheet mask

A fabric sheet pre-soaked in essence, worn for a set time to deliver a concentrated dose of active ingredients.

Every product sold by Adilsons Beauty is 100% genuine, sourced through authorized Korean distribution channels. Full details on our verification system: Authenticity and Trust.

Our team is available to help you build a routine, troubleshoot reactions, and answer ingredient questions. WhatsApp: +230 5 778 2336.

For in-depth skincare education, visit our blog at adilsons.mu/blogs/k-beauty or subscribe to our email to get our guided education series delivered to your inbox.

Coverage: Island-wide delivery (Mauritius).

Processing and Timing: Orders process in 1-2 business days; usually ready by Day 3 for pickup by our delivery partners/regional team. Partner collection can take up to 1 week. After pickup, delivery typically takes 1-5 business days (weekdays only).

Express: May be available by region; request on WhatsApp: +230 5 778 2336.

Liquids/Sensitive Items: Serums, toners, liquid makeup (and kits containing liquids) are pickup or door-to-door only; checkout enforces this.

Scheduling: Deliveries run by region on set schedules; we will contact you the evening before.

Pickup: Citadelle Mall pickup available.

Returns: No change-of-mind exchanges.

Refunds (Summary): For defective/damaged on receipt (report within 48h), wrong item, or manufacturing defect within 6 months. Refunds via bank transfer (7-10 business days); card refunds may incur a 5% processor fee (fee not charged for defects/order errors). Opened skincare/personal-care items are non-returnable (except if damaged on delivery).

Source of Truth: This is a quick snapshot. If anything differs, the policy pages are final.

Store Policies: For the most up-to-date information, please review our Shipping Policy and Refund Policy.

Best for: anyone wanting a quick, intensive hydration boost for dehydrated or dull-looking skin, especially after sun or heat exposure, who tolerates a mild essential-oil note.

Key benefits: triple hyaluronic-acid complex plus Centella and Panthenol, sterile single-use format, satisfying immediate plumping effect.

Keep in mind: not fragrance-free, contains plain alcohol relatively early in the INCI, and is meant as an occasional treatment rather than a daily step.

AC/humidity swing interaction: after removing the mask and patting in the essence, extended air-conditioned exposure can pull that moisture back out of skin. Seal with a moisturizer if you'll be in AC for a while after masking, and consider masking as a specific pre-outdoor-humidity ritual instead when possible.