[Infill Serum] ● After washing your face at night or after preparing your skin with toner, take one pump of the dispenser and gently apply it to your entire face. [Full Expansion Serum] ● After washing your face in the morning or after preparing your skin with toner, take one pump of the dispenser and gently apply it to your entire face. <How to set the refill> ● Please replace it as follows. (A) Remove the cap, hold the shoulder part of the dispenser, turn it counterclockwise, and pull it up. (B) Remove the dispenser from the container you have used up. (C) Remove the cap of the new refill container and attach the dispenser. (D) Return the refill container with dispenser to the outer container and turn it clockwise until it clicks into place to set it. * When opening and closing the dispenser, be sure to turn the shoulder part of the dispenser. If you turn the top part by mistake, the dispenser may become unusable.