Costly hair straightening tool mistakes that you need to avoid at all costs The flat iron used for hair straightening is one of the most versatile tools that one can have in her/his beauty arsenal. It can be used to refresh the blowout for a fresh look, straightening curly strands or even make those “beachy” looking waves and bangs. But the truth is it can also be a dangerous weapon in the hands of a rookie. And you will surely be damaging your hair if used incorrectly. You need to remember that flat irons can heat up to 450°C which is a lot more than hair can handle. To review…