The Pyunkang Yul Brightening Blemish Care Serum contains niacinamide and adenosine to prevent dark melanin pigmentation, brighten the skin, and transform rough skin into a healthy, resilient complexion. Certified with EWG graded green and safe ingredients, it is non-irritating and effective on human skin, improving blemishes, dark spots, and wrinkles. This serum is recommended for use with Pyunkang Yul Brightening Vita Toner and Brightening Radiance Cream for clear, glowing moisture without irritation. Key ingredient niacinamide lightens melanin pigments, while the comfortable essence formula absorbs smoothly into the skin without stickiness. To use, apply the serum after washing your face and using a toner, gently spreading it across your entire face.