The Ordinary Niacinamide 10% + Zinc 1% is a water-based serum that is known for its skin-brightening and skin-smoothing properties. It contains a high 10% concentration of Niacinamide (vitamin B3) and zinc PCA, which helps to improve skin texture and reinforce the skin barrier over time. The serum is suitable for all skin types and is vegan, cruelty-free, and gluten-free. It is formulated without alcohol, oil, silicone, parabens, sulfates, and other harsh ingredients. The pH of the serum is between 5.00 and 6.50, and it is recommended to be used after cleansing, before any anhydrous serums, oils, suspensions, or creams. Some of the key ingredients include Niacinamide, Pentylene Glycol, Zinc PCA, Dimethyl Isosorbide, and Tamarindus Indica Seed Gum