Vermilion border

The vermilion border is the line where your lips meet your skin. It's like a little fence made of a special kind of skin that is red and pink. This is why your lips have a different color than the rest of your face. It's because of this special skin! So, if you put lipstick on your lips, you're actually coloring this part of your skin. It's one of the things that make your face unique and special, just like your fingerprints!