CLINICALLY SHOWN RESULTS: Our concentrated niacinamide serum is formulated with pure 12% niacinamide and 2% zinc PCA, and clinically shown to reduce the appearance of discoloration, pores, plus fines lines and wrinkles | CONCENTRATED, POWERFUL FORMULA: This serum combines a high concentration of niacinamide (vitamin B3) with zinc salt of pyrrolidone carboxylic acid to visually refine facial complexion. Upon receiving order from Naturium, bottle and carton color may vary | MOST SKIN TYPES: Niacinamide Serum is appropriate for those with sensitive skin, though a patch test prior to use is advised. Use 1-2 pea-sized drops AM + PM gradually increasing use until skin develops a tolerance | PROUDLY FORMULATED: All of our products are formulated to be pH level appropriate, made in the USA, Vegan, Cruelty Free, Paraben Free, Gluten Free, Skin Compatible, & Dermatologist Tested. Most of our skincare is Synthetic Fragrance Free | SKINCARE THAT WORKS: At Naturium, we are committed to providing affordable skincare essentials that use only ingredients directly benefiting the skin’s health, which support the integrity and effectiveness of our formulations