A sustainable bamboo tongue cleaner with plant based bristles The &Keep bamboo tongue cleaner compliments your daily dental hygiene. When used daily it will help to remove debris and bacteria from your tongue while freshening your breath and improving your sense of taste.  It is made from fast-growing, organic, naturally antibacterial & antifungal bamboo. The bristles are made from renewable castor oil making for an all-round eco-friendly toothbrush: petroleum-free, vegan & BPA-free. Castor oil is a natural product made from the seeds of the castor oil plant (Ricinus communis). The raw material is used neither as food nor as animal feed, and its cultivation therefore does not compete with food crop cultivation areas.