Using this lipstick is super easy. Just apply it directly to your lips and enjoy the color - changing effect that adapts to your body temperature. It also helps keep your lips moisturized throughout the day. When you're done using it, make sure to put the cap back on tightly to prevent it from drying out. Keep it in a cool and dry place. Avoid exposing it to direct sunlight for a long time. If you have sensitive lips, it's a good idea to do a small patch - test on your lips first.