MANILA, Philippines - Orabrush’s patented tongue cleaner is designed to help cure bad breath. It was invented by Dr. Robert Wagstaff 10 years ago. Since then, Orabrush has used a reverse marketing approach to generate a strong online presence utilizing social media. The company’s YouTube channel has gained more than 37 million views and has become the second-most-subscribed sponsor channel on YouTube, behind only Old Spice.