Fading Dark Spots and Hyperpigmentation with numbuzin's No.5 Line THE YESSTYLIST numbuzin No.5+ Vitamin Concentrated Serum (Glutathione + Vitamin Boosting Serum) Suitable For: Dull & tired skin Uneven skin tone Pigmented dark spot prone skin Normal, dry NUMBUZIN No.5 Glutathione Vitamin Concentrated Serum 30ml+30ml K Beauty eBay Lets take a closer look to ingredients in No. 5 Serum, All of them are active ingredients to help brighten dull skin, fade dark spots, and reduce hyperpigmentation to reveal a brighter and glowing