Glutathione Niacinamide Serum 40ml The APLB Glutathione Niacinamide Ampoule Serum is a standout product offering a multifaceted approach to achieving radiant and healthy skin. Here's a detailed review of its key aspects after 15days of Glow Up with Glutathione! APLB Glutathione Niacinamide Ampoule Serum Glutathione + Niacinamide Brightens + strengthens skin barrier Lightweight, soothing formula Numbuzin No.5+ Glutathione Vitamin Concentrated Serum If your skin's been looking dull and feeling a little sensitive, this one's worth a try. The APLB Glutathione Niacinamide Ampoule Serum helps even out tone without messing with your skin barrier.