To buy: $24 with coupon (was $50); amazon.com. Using the flat brush is as simple as the original round One-Step brush (if not somewhat more intuitive and perhaps even easier). The ionic technology in the brush smoothes flyaways as you glide it down your wet hair, and gives you shinier and less frizzy strands. Its detangling bristles means you won’t have to pull at your hair to get rid of any knots, and combined with its heat, the brush styles wet hair easier than if you were to do it with a wooden paddle brush in one hand and a hair dryer in the other. You can choose between two heating and speed settings, or even to turn the heat off completely on days when you’re simply giving your hair a quick brush before heading out. One reviewer said it’s a “phenomenal product” for drying kinky, curly, coiled hair, adding that it dried their hair “faster than any other dryer” they’ve used before. Others also love how it speeds up the hair-drying process, with one shopper writing that their daughter’s hair typically takes 30 minutes or more to dry with conventional methods but took less than 10 minutes with the Revlon brush. Even a self-proclaimed skeptic said the brush was capable of drying “extremely thick hair” in seven minutes, adding that the One-Step paddle brush gives them “the perfect blowout without having to use a hot iron.”