numbuzin No.5 Serum | Vitamin Concentrated Serum | 1.01 fl. oz.[DARK SPOTS BRIGHTENING SERUM] Daily serum enriched with brightening 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, taken either orally or through injections to brighten dull, uneven skin tone and to fade hyperpigmentation, dark spots, and acne marks. This powerful