Who else remembers when tooth whitening was an expensive procedure you could only have done in a dentist’s office? In the last 10 years, at-home tooth whitening has become safer, faster and cheaper, and it seems to have culminated in this little Listerine Whitening Pen.

With the Listerine Whitening Pen, you can whiten anywhere; no strips or mouthwashes or trays are required. Just twist the end and brush the gel onto your teeth. Within two weeks, you’ll have whiter teeth. How genius is that? It also kills bad breath, so it’s a fantastic 2-in-1 device. Has anyone tried it?