Simply brush on the liner to the lash line as you would any eyeliner and then apply the magnetic lash. Iron oxide in the liner attracts the magnetic lash! Waterproof and long lasting, the “stay all day” liner and magnetic lashes provide an effortless solution to magnetic lash application. The silky-smooth eyeliner also gives a soft - satin finish and comes with a built in brush for application ease. Meditation Black.