For poker-straight, smoothed-out locks, there is no easier heated tool than a hair-straightening brush.
The name gives the game away, the gadget resembles a hairbrush in its design that you glide from root to tip, encouraging your strands to fall in line with greater manageability and tackling those hard-to-reach areas like the back of the head. Like a hair straightener but with bristles instead of ceramic plates, they are kinder to delicate hair using less direct heat to achieve a similar style as it moves down sections instead of clamping in place.