The Aquasonic Black Series Ultra-Whitening Toothbrush is one of the best-selling electric toothbrushes at Amazon. The sleek, travel-friendly toothbrush is on sale for $40 today, and it’s got more five ...

Normally $50, you can get the toothbrush — plus its travel case and eight brush heads — for 20 percent off today. Keep reading to find out why shoppers are calling the Aquasonic electric ...