A deep hydrating serum paired with a high-strength vitamin formula makes the perfect combination of The Ordinary skin care products. HYALURONIC ACID FACE SERUM: This face care serum leaves your skin feeling smoother and softer. Take advantage of the state-of-thee-art hydration support formula with ultra-pure, vegan hyaluronic acid. The next-generation HA crosspolymer at a combined concentration of 2% delivers multi-depth hydration in a water-based formula with added vitamin B5 for enhanced surface hydration. NIACINAMIDE SERUM 10% (VITAMIN B3) + ZINC 1%: The high-strength vitamin and mineral formula contained in this skin serum reduces the appearance of skin blemishes and congestion. Over time, a high 10% concentration of this vitamin alongside zinc salt of pyrrolidone carboxylic acid has been shown to significantly reinforce the skin barrier function, improve skin smoothness, and increase skin radiance.