Lips are made of very sensitive tissue and, because we use our mouths constantly, are over-exposed to harsh environmental factors.
You may feel addicted to your lip balm, but are you actually addicted?
Today, on A Moment of Science, why lips go dry. Let’s start by reviewing the ways in which the surface of our lips is different from the surface of the skin on the rest of our bodies. Basically, our lips are made of the same mucus membrane that coats the inside of our mouths. This […]