When I think about beauty tools that have gone viral, the first product that comes to mind is Revlon's One-Step Hair Dryer ...

Before using this brush, I had given up on blow drying my hair myself (my arms get too tired, it takes me upward of one hour to do my entire head, and it never ends up looking sleek and frizz-free).

Results in a little more frizz than more expensive brushes. Revlon can’t guarantee how hot any setting gets. Runs hotter than other blow-dry brushes for a higher risk of damage. For such a cheap ...