The Bristl toothbrush uses phototherapy to keep your smile white

Save 24 percent on this smart toothbrush.

Electric toothbrushes do a decent job of cleaning most surfaces in your mouth. The problem is, bacteria can build up between your teeth and along the gumline—leading to plaque and gum disease. The Bristl Phototherapy Electric Toothbrush solves this problem by blasting bacteria with light. You can get this smile preserver now for $74.99 at the PopSci Shop.

Phototherapy is a fairly new treatment in the world of oral health, but it has already been embraced by dentists. Bristl brings this technology home and makes it affordable.

To clear away the bacteria and plaque, Bristl beams near-UV blue light into your mouth. This is way more effective than brushing alone. Bristl also uses red light to reduce inflammation in your gums and encourage natural repair. This can help keep away conditions such as gingivitis.

In all other respects, Bristl works like a regular electric toothbrush. There are two brushing modes to pick from: soft (12,000 RPM) and strong (24,000 RPM). The battery lasts for three weeks on a full charge, and Bristl shuts off automatically to prevent over-brushing.

Normally priced at $99, Bristl is now $74.99 with this deal—and you can use code NEWYEAR2019 to get an extra 19 percent off.