COSRX, a dermatological skincare brand from Korea, is releasing a daily sheet mask, "The Alpha-Arbutin Serum Daily Sheet Mask," based on its best-selling serum "The Alpha-Arbutin 2 Blemish Scar Care Serum," which can be used every day.
Starting August 1, 2026, it can be purchased in advance at "MEGA OSHI," held on the online shopping mall "Qoo10."
Easy care in 5 minutes a day: the new daily sheet mask
The new product, "The Alpha-Arbutin Serum Daily Sheet Mask," is offered at a list price of ¥2,650 for a pack of 30 sheets.
To use it, cleanse your face, prep your skin with toner, press the sheet mask against your skin, remove it after 5 to 10 minutes, and work the remaining serum into your skin.
This product was developed as the daily sheet mask version of "The Alpha-Arbutin 2 Blemish Scar Care Serum," which won the No. 1 sales volume*¹ in Qoo10's serum category in December 2025.
Popular with beauty influencers and selected for numerous best cosmetics awards, this product is now coming out as a sheet mask in response to many consumers' requests.
Qoo10 The Alpha-Arbutin Serum Daily Sheet Mask product page
Contains high-concentration alpha-arbutin*² and niacinamide*²
Aimed at hyperpigmentation and blemish scars, this product contains 5,000 ppm of alpha-arbutin*² at 99.9% purity and 20,000 ppm of niacinamide*² at a high concentration.
In particular, the company explains that the 5,000 ppm of alpha-arbutin*² is a high level for a sheet mask, comparable to the concentration of commercially available serums.
These ingredients are expected to work across a wide range of stages, from before pigmentation occurs to after it has occurred.
*¹As of December 2025
*²Skin-conditioning ingredient
A sheet that combines a light feel with high adhesion
The essence of "The Alpha-Arbutin Serum Daily Sheet Mask" is characterized by a light, non-sticky texture despite its high concentration.
COSRX states that, to create a sheet that keeps a light feel while fitting snugly across the whole face with no gaps, it studied how more than 20 types of fabric work with the essence.
This research led to a combination that delivers excellent adhesion while maintaining the essence's texture and finish.
About COSRX
COSRX is a dermatological skincare brand born in Korea in 2013. Under the brand slogan "Expecting Tomorrow" (for tomorrow with better skin), it takes skin concerns seriously and pursues simple formulas that deliver visible results.
It is characterized by gentle formulas that are easy to use even on sensitive skin and ingredient design based on dermatological science. Now available in more than 146 countries and regions, its ingredient-focused products such as "The Vitamin C 23 Serum" and "The Retinol 0.1 Cream" are highly rated.
By leaving out unnecessary ingredients and including only those that are needed, COSRX aims to bring out the skin's natural strength and make daily skincare smarter and more comfortable.
