●Use twice a day, morning and night, after skin care. <When using on eyelashes> ●Lightly place the tip of the ball tip against the base of the eyelashes and gently apply to the entire base. *Be careful not to take or apply too much serum. ●Use the peaked side of the brush to apply smoothly to the tip of the eyelashes. <When using around the eyes> ●Place the ball tip in the center of the eyelid, gently spread it to the left and right, then blend it into the entire eyelid with your fingers. *When using as an eye makeup base, wait until the serum dries before applying eye makeup such as eyelash curler, mascara, and eyeshadow. After use, wipe the ball tip clean with tissue paper. *Can also be used by those with eyelash extensions.