Red Dust Compostable Bamboo ToothbrushAdd a Brush. Give a Brush. Sold in partnership with Red Dust, this compostable toothbrush does more than support your daily routine. 100% of proceeds from every purchase go to Red Dust, supporting mental health and well being programs in remote Indigenous communities, creating First Nations jobs, and providing critical role modelling programs for First Nations youth. Learn more about Red Dust. These bamboo toothbrushes come in packs of 2 and 3. Medium