COSRX Alpha-Arbutin Discoloration Hydrogel Face Masks 3-Pack — Overnight Brightening with Niacinamide & Collagen

COSRX The Alpha-Arbutin Discoloration Care Hydrogel Face Mask is an overnight, collagen-infused hydrogel mask formulated to hydrate skin while targeting uneven tone and visible dark spots.

This trio of travel-ready hydrogel masks combines alpha-arbutin, niacinamide, glutathione and tranexamic acid in a low-irritation sheet designed to cling to skin and deliver concentrated actives. The mask’s gel becomes transparent as it releases ingredients, leaving behind a moisture-rich essence and a smoother-looking surface. Clinical testing on a small group reported improved radiance and smoother skin texture after single use, making these masks a convenient step for evenings, targeted treatments, or travel skin-care emergencies.

How does this hydrogel mask improve appearance overnight?

The hydrogel matrix locks moisture against the skin so active ingredients can penetrate without evaporating. Ingredients like alpha-arbutin and niacinamide support a more even-looking complexion, while collagen and adenosine address visible texture and firmness.

• Hydrogel film adheres closely for better ingredient delivery.
• Alpha-arbutin targets pigmentation discoloration.
• Niacinamide refines skin texture and boosts radiance.
• Low-molecular-weight collagen helps the skin feel plumper.

What are the key actives and what do they do?

Each mask blends several proven cosmetic actives rather than a single-ingredient claim. Alpha-arbutin works on pigmentation, niacinamide smooths and brightens, glutathione and ferulic acid support antioxidant balance, and tranexamic acid is included for its targeted effect on discoloration.

• Alpha-arbutin — assists in reducing the appearance of dark spots.
• Niacinamide — improves texture and evens tone.
• Glutathione & ferulic acid — antioxidant support for stressed skin.
• Tranexamic acid — commonly used to address visible hyperpigmentation concerns.

How should I use the mask for best results?

For optimal delivery, apply after cleansing and any lightweight toner or serum. Remove the protective films, smooth the mask over the face, and leave it on for 2–3 hours or overnight until the gel turns transparent. After removal, massage any remaining essence into the skin; follow routine as needed.

• Step 1: Cleanse and tone to prep the skin.
• Step 2: Apply mask and relax for 2–3 hours or overnight.
• Step 3: Remove and gently pat leftover essence into skin.
• Tip: Patch test before first use and avoid if irritation occurs.

Are there any safety tips or recommended precautions?

Patch testing is recommended on the body 24 hours before first facial use to check for sensitivity. If you experience redness, stinging, or swelling, discontinue use and consult a healthcare professional. The formula contains multiple active ingredients, so introduce it into your routine gradually if you use other exfoliating acids or strong actives.

• Always perform a 24-hour patch test before first use.
• Stop use and seek advice if irritation occurs.
• Avoid combining with high concentrations of other exfoliants at the same time.
• Suitable for occasional targeted treatments and overnight use.

Who is this for? These COSRX hydrogel masks are designed for people seeking a compact, potent treatment to address uneven skin tone, travel-friendly hydration, or an overnight glow boost without adding heavy creams. They suit anyone wanting a non-greasy, adhesive mask experience that layers well into evening routines—particularly those already using brightening or collagen-supporting products. Not recommended for those with known sensitivities to any listed ingredients; perform a patch test first.

Ingredients

Water, Glycerin, Acrylates Copolymer, Niacinamide, 1,2-Hexanediol, Ceratonia Siliqua (Carob) Gum, Chondrus Crispus, Agar, Betaine, Sclerotium Gum, Potassium Chloride, Alpha-Arbutin, Erythritol, Sucrose, Cellulose Gum, Polyglyceryl-10 Laurate, Panthenol, Allantoin, Acetyl Glucosamine, Xanthan Gum, Ethylhexylglycerin, Adenosine, Theobroma Cacao (Cocoa) Seed Extract, Hydrolyzed Collagen, Sodium Phytate, Hydrogenated Lecithin, Cetearyl Alcohol, Stearic Acid, Pentylene Glycol, Ferulic Acid, Ceramide NP, Sodium Hyaluronate, Tocopherol, Sodium Hyaluronate Crosspolymer, Hydrolyzed Hyaluronic Acid, Ceramide NS, Cholesterol, Phytosphingosine, Hyaluronic Acid, Ceramide AP, Ceramide AS, Hydrolyzed Sodium Hyaluronate, Glutathione, Ceramide EOP