Re: Dual voltage straightening irons..
^she wasn't using the right converter then, probably wasn't high enough power rating. or she may not even have been using a converter. some people just use an socket adapter and expect the same thing.
the easiest way is to buy a dual voltage as Niksik has done - one appliance and will work between 120-220V. i have a remington that is dual voltage and keep a world travel adapter in my toiletry bag, i'm always set for europe, pakistan, usa..