The TUNG brush was designed by dentist Dr. Wieder to be the most effective tongue cleaner ever. In fact, 90% of consumers preferred the TUNG Brush in a study conducted by Nova Southeastern University. Our tongue brush is designed specifically to clean the rough but tender surface of the tongue. Our tongue gel is formulated to neutralize that nasty bacteria gas that causes bad breath, leaving your mouth minty fresh. Together they're the most effective tongue cleaner on the market today. Professionally designed and made in America. We know that once you've tried our tongue brush and gel system you'll agree that no other tongue cleaner works better.