Using this lilybyred Smiley Aegyosal Eyeliner is super easy. First, take the end with the 3mm round - shaped highlighting liner. Gently draw the aegyo sal line under your eyes. Try to follow the natural curve of your under - eye area for the best effect. After that, pick up the 2mm flat shading liner. Apply it just beneath the line you've drawn to add depth and make your eyes look like you're smiling naturally. When you're done using it, make sure to cap it tightly to prevent it from drying out. Store it in a cool, dry place. And remember, if you accidentally get it in your eyes, rinse them right away with clean water.