Korean beauty skin care brand Cosrx, known for its snail mucin solutions, has launched a gentle, non-sticky serum targeted at blemish-prone skin and hyperpigmentation. The Alpha-Arbutin 2 Skin Discoloration Serum promises to promote a clearer, more radiant complexion. Cosrx says the formula is a powerful blend of active ingredients, offering a dermatologically tested solution for sensitive skin.