COSRX Hydrium Watery Toner is truly a bottle full of hydration. The presence of Hyaluronic Acid ensures the retention of moisture while smaller hyaluronate molecules penetrate into the skin binding and attracting moisture. D-Panthenol and Allantoin included in the 13 ingredient formulation soothe and heal the skin. This toner is versatile which can be applied as a toner sheet mask, mist or hydrating cleanser.