This MediHeal hydrating mask has what's called N.M.F., (Natural Moisturizing Factor), this solution quenches dry skin by locking in natural moisture for long-lasting hydration. It also has sodium hyaluronate, & witch hazel water that quenches thirsty, dry skin, while alliantoin with trehalose provides a tightening and lifting effect. This mask hydrates, tightens and it's refining. This is an awesome moisturizing face mask.