Organic Niacinamide Serum 5% – Pore Minimizer + Anti-Aging TreatmentPore Minimizing Serum Oil Control & Dark Spot Corrector Tighten Pores. Balance Oil. Brighten Skin All in One 5% Niacinamide Serum. Our Organic Niacinamide Serum 5% delivers the clinically proven optimal concentration of vitamin B3 to visibly minimize pores, regulate oil production, reduce fine lines, fade dark spots, and strengthen the skin barrier. This lightweight pore minimizing serum works for oily, dry, sensitive, and combination skin without