COSRX The Alpha-Arbutin 2 Discoloration Care Serum 50ml

COSRX The Alpha-Arbutin 2 Discoloration Care Serum is a lightweight brightening serum built around 2% alpha-arbutin. It's made to give dull, uneven-looking skin a fresher, more luminous appearance while keeping things comfortable and hydrated. The texture is watery and fast-absorbing, with no sticky film left behind, so it slots neatly into a multi-step Korean routine and sits well under sunscreen and makeup.

Alongside alpha-arbutin, the formula pairs niacinamide, tranexamic acid, N-acetylglucosamine, glutathione and ferulic acid to help skin look more even and radiant. A complex of five molecular weights of hyaluronic acid, plus panthenol and allantoin, keeps the skin cushioned with moisture and feeling soft rather than tight. The 50ml bottle is suited to daily use as a gentle step toward a brighter, smoother-looking complexion.

Who is it for?

This serum suits all skin types, including sensitive and blemish-prone skin. If your main goal is a more even, glowing look without a heavy or greasy feel, it's an easy daily option.

How do you use it?

After cleansing and toning, apply a few drops to clean skin morning and evening. Pat in gently, then follow with moisturiser. In your morning routine, always finish with sunscreen, since this serum is focused on the appearance of brightness and even tone.

Key benefits

• Brighter, more even-looking skin – helps soften the look of dark spots and uneven tone for a clearer-looking complexion.
• Lasting hydration – five weights of hyaluronic acid, panthenol and allantoin keep skin moisturised and comfortable.
• Light, layer-friendly feel – fast-absorbing, non-sticky finish that works under other skincare and makeup.

Key ingredients

• Alpha-Arbutin (2%) – a gentle ingredient that helps the skin look brighter and more even.
• Tranexamic Acid – supports a more even-looking complexion and a fresher tone.
• Niacinamide – helps refine the look of pores and texture and supports a brighter, more even appearance.
• N-Acetylglucosamine (NAG) – works alongside niacinamide to improve the look of dullness and uneven texture for a smoother surface.
• Glutathione – an antioxidant that helps defend skin against the look of environmental stress and supports a radiant finish.
• Ferulic Acid – an antioxidant that helps protect against environmental aggressors and supports the other brightening ingredients.
• Hyaluronic Acid Complex – multiple molecular weights of hyaluronic acid that draw moisture into the skin for a plump, dewy look.
• Panthenol & Allantoin – soothing humectants that help skin feel calm, comfortable and well-moisturised.