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Even though it's thin (1"), it still straightens well. Being thin makes it easy to handle, and also a great option for travelling.
Con Poorly built
Lots of reviews stating that their CHI stopped working after less than a year. In some cases it just stopped heating up or turning on, and there has been many mentions of a faulty cord.
Con Can damage hair
Because there is no way to adjust the temperature, it can be very damaging to your hair (especially people with fine hair).
Con Heat is non-adjustable
The straightener is either on or off, there is no way to adjust the heat settings to suit your hair type.