Using this lip oil is a breeze. Just apply it directly on your lips. It will give you a long - lasting, waterproof effect and keep your lips moisturized and plump. When it comes to color, it's randomly selected, so you'll get a bit of a surprise. Keep in mind that the color you see in the picture may not exactly match the actual product because of monitor differences. And if you're checking the size, remember there could be a 1 - 3cm error due to manual measurement. To maintain its quality, store it in a cool and dry place. This lip oil is so portable that you can take it with you wherever you go, ensuring your lips are always in great condition.