Here are the two factors that come into picture while keeping your hair straight using a hair straightener.
Weather: The humid and rainy weather saturates shafts and produces frizzy hair. So, it becomes essential to use hair straighteners twice a day. However, if you are travelling, you need to carry a hair straightener with you on the go.
Hair texture: Fine hair stays straight for a longer time, curly ones need a bit of touch-up, the coarse ones are vulnerable to frizz. But using hair straighteners can keep a bit of wavy hair straight for a longer time.