Instruct: Classify Amazon reviews into positive or negative sentiment
Query: What a rip off

Seemed to work OK at first although I didn't notice much improvment in speed of drying. It is lightweight and easy to handle -- but it is hotter than I'm used to. After 6 months, my hair started to feel dry and had zero shine. My hair had always been very healthy and shiny before. My hair stylist noticed it and couldn't figure out what was wrong. After about 9 months, I switched back to my old hairdryer and my hair was instantly healthy and shiny again. Maybe this hairdryer is good for some people but it was bad for me, and costly!