Each pack contains eight TePe interdental brushes — one of each size from the range from the smallest (Pink 0.4 mm), through to the largest (Grey 1.3 mm). Each pack also comes with a travel cap.

For interdental brushes to be effective, you need to make sure to pick the right size though, says dentist Stefan Zimmer. If it still looks as good as new after weeks of use, the brush is probably ...