Source & Tour Replacement Toothbrush Heads

$4.5 $9 In stock

Give your toothbrush new life with RADIUS toothbrush replacement heads - the sustainable, interchangeable refills designed for SOURCE™ and TOUR™ Travel Brush handles. With a wide, gum-massaging head and long neck for deep reach, these heads deliver our signature clean while reducing toothbrush waste by an incredible 93%.

These are replacement heads only and must be used with a compatible RADIUS handle.

Customer Reviews (4.2 / 5 · 5 reviews)

Julian ★★★★★ Aug 19, 2026

The wide head feels gentler on my gums than the standard brush I used before, and it’s nice knowing I’m not tossing a whole handle every few months. Snaps on and off the travel handle in seconds, which makes switching between home and trips effortless.

Robert ★★★★★ Aug 18, 2026

Swapped these onto my travel handle and the wide head actually covers more surface per pass, so my routine feels quicker. The gum-massaging edge is a nice bonus, and the refill snapped in without any fiddling.

Elizabeth ★★★★★ Aug 17, 2026

The wide head covers more surface area in one pass than my old brush, and swapping the head onto the handle took about ten seconds. My gums feel less irritated after a week, which is exactly what I hoped for from a refill.