Vya Naturals Niacinamide Serum 5%GENTLE AND HYDRATING: Formulated with 5% niacinamide its ideal for people with sensitive skin & those who find Niacinamide 10% a little strong. it delivers hydration throughout the day leaving the skin looking healthy and more glowing. ALL IN ONE SERUM: Niacinamide is the magical ingredient that does it all. This water soluble, ultra hydrating vitamin helps reverse and prevent signs of skin ageing, brighten and smooth skin, calm inflammation and