Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Didn't work on my hair

I did too much research on trying to find a curling iron that was dual voltage and in the end, this one wasn't! But beyond that fact, I couldn't get my hair to curl with this particular curling iron. I have thick, coarse, curly hair that looks a heckuva lot better blow-dried straightish, then curled with a curling iron. I don't need to use any styling products to get curls to stay in my hair, but this curling iron compared to the one I use at home in Italy, which isn't ceramic tourmaline but metal, was immediately donated to a friend. Oh well.