Using these eye shadow sticks is a breeze. First, twist up a bit of the eye shadow stick. Then, gently glide it across your eyelid. You can use different colors to create various makeup looks, like a natural daily look or a more glamorous evening style. For a more intense color, you can apply a second layer. When you're done, just twist the stick back down to keep it protected. As for maintenance, store the eye shadow sticks in a cool and dry place, away from direct sunlight. Avoid getting the sticks wet as it may affect the quality. Also, make sure to close the cap tightly after each use to prevent the product from drying out. And always remember to wash your hands before using the eye shadow sticks to keep them clean.