Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Perfect.

Naturally, my hair is very frizzy and poofy. Not so much curly, but wavy and as if every hair is going in a different direction. My previous flat irons were a Hot Tools one and a Bed Head. Using those it took me about an hour to straighten my hair. It was so annoying if I ever had to go somewhere in a hurry after work because I literally needed about 2 to 3 hours to do my hair (with washing and drying it).. so I bought this Sedu. I was AMAZED the first day I got it.. I was able to shower, blow dry, and straighten my hair all in under one hour.Another great thing about this flat iron, is it keeps my hair straight all day long. With my old flat irons, my hair would be straight when I was finished, but within an hour or so it started to get poofy again. And if it was humid or muggy outside... my hair was DONE for. But I swear, with this flat iron, I no longer have to check the weather before I leave the house.