Benefits: This Ultra Powerproof Pencil Liner glides on effortlessly to deliver intense yet soft color payoff. The powerful waterproof formula and Film Forming Formula creates a strong water-, oil-, sweat- resistant protection to hold the clear makeup for whole day. Quick dry formula avoids eyeliners from smudging. How to use: 1. Twist up the formula. 2. Create a line from beginning to end along the lash line. Tip: If desired, blend the eyeliner with the sponge tip. Replace method: Take out the used pencil from the cartridge, replace with the refill product.