COSRX The Alpha-Arbutin Discoloration Care Hydrogel Mask 34g (3 Sheets)

Features

COSRX The Alpha-Arbutin Discoloration Care Hydrogel Mask is a specialized brightening and toning mask designed to address dark spots and uneven skin tone. This innovative hydrogel mask is crafted by solidifying a high-performance brightening serum into a gel sheet. As the mask is applied to the skin, it gradually turns transparent, allowing users to visually confirm that the active ingredients are being effectively absorbed. The hydrogel texture adheres perfectly to facial contours, ensuring deep delivery of the essence without irritation.

The product is formulated to be gentle on the skin, having successfully completed sensitivity irritation tests and acne-prone skin suitability tests. It is also non-comedogenic, making it a safe choice for those concerned about clogged pores or sensitive, troubled skin.

Benefits

This multi-functional mask provides a comprehensive solution for skin discoloration, brightening, and overall texture improvement. It works to fade the appearance of dark spots and blemishes while enhancing skin radiance and hydration. With consistent use, it helps achieve a clearer, more uniform complexion, visibly improving skin glow and smoothness. The mask also offers soothing benefits and elasticity support, helping to reduce the appearance of fine lines and wrinkles.

Main Ingredients and their effects

Alpha-Arbutin: Known for its superior brightening efficacy, this ingredient helps to even out skin tone and reduce the appearance of dark spots and acne-related marks.

Niacinamide: A functional brightening ingredient that works to clarify the complexion and improve overall skin tone.

Acetyl Glucosamine (NAG): Works in synergy with Niacinamide to enhance brightening effects and promote a more balanced skin appearance.

Collagen: Included in a 200Da low-molecular form to help improve skin elasticity and support anti-aging care.

Glutathione and Ferulic Acid: These potent ingredients are formulated to provide additional antioxidant support and target hyperpigmentation at various stages of melanin formation.

Clinical test results

In clinical evaluations conducted on 20 adults (aged 20–59) between March 10 and April 21, 2025, COSRX The Alpha-Arbutin Discoloration Care Hydrogel Mask demonstrated significant efficacy. After four weeks of use, results showed a 5.32% improvement in pigmentation, a 14.46% improvement in deep-seated dark spots/blemishes, and an 11.44% improvement in surface dark spots/blemishes. Skin melanin levels were reduced by 4.33%.

Immediate improvements after a single use included a 10.22% increase in skin tone brightness, a 30.15% increase in skin radiance, and a 208% increase in skin hydration. Additionally, the mask showed significant improvements in skin texture (26.27%), elasticity (10.19%), and pore area (-39.8%). The product also demonstrated significant soothing effects, reducing skin redness by 84.4%.

Usage instructions

After cleansing and refining the skin texture, open the pouch and remove the protective film. Apply the bottom half of the mask around the mouth and the top half around the eyes, smoothing it to fit your face. Leave the mask on for 2 to 3 hours, or until it becomes transparent, which indicates the absorption of the active ingredients. Once finished, remove the mask and gently pat the remaining essence into the skin. For best results, use as a special care treatment or as an overnight sleeping pack. You can also use the leftover pieces of the mask on other areas of concern, such as the forehead, nasolabial folds, or neck.