numbuzin No.5 Vitamin Concentrated Serum[DARK SPOTS SERUM] Daily serum enriched with tone evening ingredients, glutathione and vitamin C, and antioxidants, to gently yet effectively fade dark spots and hyperpigmentation, leaving you with glowing, clear skin. [GLUTATHIONE] Glutathione is a well known supplement especially in Korea, to improve dull, uneven skin tone and to fade hyperpigmentation, dark spots, and acne marks. This powerful antioxidant inhibits melanin overproduction and