Lips—pretty amazing, right? They eat, they talk, they whistle, they kiss, they pout, they smile. Lips are 100 times more sensitive than fingertips. Scientists say that lips even allow for biological information to be exchanged between the kisser to the kiss-ee. And did you know that no two lip prints on a glass are ever the same? Well, you do now. If you’re comparing facial features, your lips are working overtime every. single. day. And eventually… they'll start to look like it.