Dry, cracked lips are one of the most common—and frustrating—skin concerns, yet they’re often treated as an afterthought.

Princeton University researchers used a laser sheet to illuminate saliva droplets coming out of a speaking mouth. Manouk Abkarian At a revealing 5,000 frames per second, a camera captured how talking ...

Do you wake up in the middle of the night and need to drink water? Or notice that your mouth constantly feels like it’s filled with cotton balls? You might have dry mouth (a.k.a. xerostomia), an oral ...

Waking up with a sticky, dry mouth at night can feel very uncomfortable and strangely worrying. Saliva does far more than ...

Dry mouth, or xerostomia, is the sticky sensation you may feel when you don’t have enough saliva or spit in your mouth. Waking up with a dry mouth can be uncomfortable and may make it hard to swallow.

Most of us are awash in saliva: we produce and swallow about a liter of it each day, totaling more than 20,000 L in a lifetime. This substance plays many roles in our everyday lives. It enables us to ...

Princeton University researchers used a laser sheet to illuminate saliva droplets coming out of a speaking mouth. Manouk Abkarian At a revealing 5,000 frames per second, a camera captured how talking ...