COSRX
The Alpha-Arbutin Discoloration Care Hydrogel Mask (1ea)
A hydrogel mask with alpha-arbutin and niacinamide, worn after toner in place of a serum step in the evening.
No reviews yet- Ships from our California warehouse
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- Suited to
- Dry skinCompromised barrierDehydrated skinSensitive skin
- Helps with
- Shoppers looking for Alpha-Arbutin in a sheet maskRoutines that want Alpha-Arbutin and Niacinamide in one stepFilling the sheet mask step with a Korean-market formula
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- 30-day returns
- Free US shipping on orders of $100 or more
- Dispatched within 2 business days
How it works
The Alpha-Arbutin Discoloration Care Hydrogel Mask is a 1ea sheet mask, used after toner, in place of your serum step, in the evening. The active it is built around is Alpha-Arbutin, named twelfth on its own ingredient list. The same list carries Niacinamide, Allantoin and Acetyl Glucosamine, so the active is not the only thing on it worth naming. How much of the Alpha-Arbutin stays on the skin, and for how long, is decided by the sheet mask format rather than by the list alone. COSRX sells this Alpha-Arbutin sheet mask in Korea, and this is that version.
Key benefits
- Alpha-Arbutin, the active this sheet mask is built around
- Niacinamide, Allantoin, Acetyl Glucosamine and Adenosine on the same list, actives
- Ferulic Acid and Tocopherol further down the same list
- Glutathione and Ceramide NP further down the same list
- Alpha-Arbutin named twelfth on the manufacturer list printed on this page
Key actives
Alpha-Arbutinactive
Alpha-Arbutin is a plant-derived compound, related to the sugar-bound form found in bearberry, used for the look of dark spots and uneven tone. It is stable in water and works at skin-friendly pH. It is the entry this sheet mask is named after, and the list carries it.
Niacinamideactive
Niacinamide is vitamin B3, and it is the most studied active in Korean formulation. The panel names it fourth on this sheet mask's list, beside Alpha-Arbutin.
Allantoinactive
Allantoin is a comfrey-derived compound used to condition skin and soften the outer layer so it feels smoother. It is one of the standard additions to a formula built for easily irritated skin. It is named eighteenth on this sheet mask's list, alongside Alpha-Arbutin.
Acetyl Glucosamineactive
Acetyl Glucosamine is the sugar unit hyaluronic acid is built from. It is used as a humectant and, at higher levels, for the look of uneven tone, often paired with niacinamide. The panel names it nineteenth on this sheet mask's list, beside Alpha-Arbutin.
Adenosineactive
Adenosine is a nucleoside that Korea's own cosmetic authority recognises as a wrinkle-care functional ingredient, which is why it appears on so many Korean lists at a low level. It is used for the look of fine lines and is stable and well tolerated. The panel names it twenty-second on this sheet mask's list, beside Alpha-Arbutin.
COSRX The Alpha-Arbutin Discoloration Care Hydrogel Mask (1ea)
Where does this sheet mask go in my routine?
After toner, in place of your serum step, in the evening. Toner goes on before it, and the rest of the routine goes on after you take the sheet mask off. If you are adding it to a routine you already like, give it a week on its own first, so what you see is the Alpha-Arbutin and not three changes at once.
What else is on the list besides Alpha-Arbutin?
Niacinamide, Allantoin and Acetyl Glucosamine. The order they are printed in on this sheet mask's panel is the order on the box, so you can see where Alpha-Arbutin sits relative to them. Further down the same panel: Adenosine, Ferulic Acid and Tocopherol.
- Ships from
- California
Duties are prepaid. Nothing is owed at delivery. Returns are accepted for 30 days, by mail.
Orders ship from our California warehouse, dispatched within 2 business days, and arrive in 3 to 5 days. Shipping is free on orders of $100 or more.
We split shipments free, so one out-of-stock item never holds up the rest of your order.
Where this unit came from
- 1Seoul
Bought as Korean-market stock - 2Customs
Duty paid by us before it enters the US - 3California
Ships domestically, no international leg
We stock the version of a formula that is sold in Korea, not the release a brand prepares for another market under the same name.
Every unit keeps its original barcode and batch code intact, so the unit in your hands can be checked against the brand’s own records.
Import duties are paid by us before the parcel reaches you, so nothing is owed at the door, and returns run for 30 days.
Every claim on this page traces to the unit in the box, the barcode, the batch code and the price you can read for yourself.
Payment and security
We accept
How to use
- Use the Alpha-Arbutin Discoloration Care Hydrogel Mask after toner, in place of your serum step, in the evening.
- Unfold the sheet, line it up at the eyes first, then smooth it outward so no air is trapped underneath.
- Take it off at the time printed on the pack, pat in the essence left behind rather than rinsing, then go straight to your moisturizer.
- Two or three evenings a week is a normal rhythm. Do not leave it on past its time; a sheet that has gone dry takes moisture back off the face as it goes.
Worth knowing
- Patch test this sheet mask on a small area and wait a day before using it more widely, especially with Alpha-Arbutin on the list.
- Introduce this sheet mask on its own for the first week, so anything your skin does is traceable to the Alpha-Arbutin rather than to three changes at once.
Reviews
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COSRX, Korean-market original
The Original Korean Formula sheet mask from COSRX, 1ea formulated with Alpha-Arbutin and Niacinamide, held in the United States and shipped domestically.
Verify your unit when it arrives
Verify your unit when it arrives
Korean-market stock with the original barcode and batch code intact, exactly as it left Korea.
COSRX verifies units itself. Find the verification page on cosrx.com and enter the batch number and expiration date printed on your unit. Read them off the package rather than from us, which is the point.
Source: COSRX FAQ
On the unit itself
- The Korean-market barcode, unaltered from the retail package.
- The manufacturer’s batch code, exactly as the maker printed it.
정품Genuine article, Korean-market stock
What professionals say
What professionals say
What skin-care professionals say about the key actives in this formula, quoted from the medical sources linked beside each.
Arbutin works to inhibit tyrosinase, an enzyme present in melanocytes, the pigment-producing cells in the skin. This results in less pigment, dark spots and skin lightening.
Tiffany Jow Libby, MDBoard-certified dermatologist, mindbodygreen Allantoin can tone down the dryness of the individual cells. It increases the water content of the skin, which means it helps to hydrate and moisturize.
Wilma Bergfeld, MDDermatologist, Cleveland Clinic
1 more professional perspective
Niacinamide helps reduce the appearance of pores in a few ways. By strengthening the skin barrier and improving elasticity, pores appear less noticeable and more even.
Ashlyn YankeAesthetician, Cleveland Clinic
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