A direct injury to the lip may cause swelling that can form slowly overnight. Injuries include cuts, scrapes, and bruises. You may unintentionally injure your lips if you bite or chew on them ...

If a person wakes up with swollen lips, they may have eaten food that triggered a reaction overnight or developed a medication sensitivity over time. Check whether they are carrying an epinephrine ...

Lips can become swollen if fluid builds up in the skin tissue or if there is underlying inflammation. Causes include allergic reactions, angioedema, and injuries. Swollen lips have a range of ...

I asked dermatologists for their favorite lip masks and lip treatments, including overnight lip masks and sheet masks. I also rounded up some highly rated options and NBC Select staff favorites ...