‘I give up’: Expert shares the right way to use mouthwash. You’ve probably been doing it wrong

Many people have a standard routine before they go to work or as they’re getting ready for bed: Brush, floss, then use mouthwash.

Mouthwash is a relatively recent invention. While early forms of a toothbrush date back as far as 3,000 B.C., mouthwash wasn’t widely used and commercially available until the early 1900s.

Since then, many have employed mouthwash either to keep their breath smelling fresh or to add an extra bit of cleanup to their dental care. However, this may not...