Every woman knows at least a little about eyeliners. There are so many different types of eyeliners that are used for different purposes. From perfecting a thin line on your eyelids to getting the most badass cateyes, eyeliners can change your makeup game for good. Its safe to say that eyeliners are one of those makeup products that women cannot live without. Whether you use pencil eyeliners or brush eyeliners, they are transform your eyes and look and make even the most sleepy eyes look like gorgeous doe eyes.