My secret weapon for that ultimate glass skin glow! This powerful serum combines Glutathione and Niacinamide to brighten complexion, fade dark spots, and smooth out Page 1 Reviews APLB, Glutathione Niacinamide, Ampoule Serum, 1.35 fl oz (40 ml) iHerb 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. APLB Glutathione Niacinamide Ampoule Serum 40ml Refresh Skincare APLB Glutathione Niacinamide Facial Cream and APLB Glutathione Niacinamide Ampoule Serum (40ml+100ml)