Fifth Surface is an oral-care brand focused on making flossing easier to manage and repeat. Its name refers to the two tooth surfaces that face neighbouring teeth—areas a toothbrush cannot reach. The brand’s central product is an electric flosser that holds a taut span of real floss between two prongs. A powered handle supplies steady motion while users guide the floss with one hand, without wrapping or threading string. Fifth Surface emphasizes that its device does not replace floss with water, air, or a rubber tip; instead, it aims to make grip, tension, and access easier to manage, including around back teeth.

The Flosser is available in white and black versions. The company also provides information about its approach to flossing, answers frequently asked questions, and shares guidance and learning from its community. Fifth Surface offers free shipping, a 90-day home trial with a money-back guarantee, and customer support. Its products are designed for people who want a more convenient way to include flossing in their daily oral-care routine.