The Hum by Colgate has an excellent smart app that guides your brushing. Unlike many other electric toothbrushes, the Hum vibrates rather than rotates, providing a different, more gentle experience.
Two millennial-focused tech-dependent brands -- Hum by Colgate, a smart electric toothbrush, and Obé Fitness, a digital workout platform -- have teamed up on app content. Starting June 11, Obé will ...
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