Using this eyeliner and mascara combo set is super easy. First, take the eyeliner and draw a thin line along your lash line to define your eyes. For a more dramatic look, you can make the line a bit thicker. Then, grab the mascara and start from the base of your lashes, wiggling the brush as you pull it through to the tips. This will help separate and volumize your lashes. When you're done, avoid rubbing your eyes right away to prevent smudging. Store the products in a cool, dry place away from direct sunlight. If you have sensitive eyes, it's a good idea to do a patch test on your inner wrist before using them on your eyes.