I have very curly hair and I can have it straight within 20 minutes using this iron (model#CD110). Its great because it gives the perfect straight to curly look. I also love the fact that I don't have to have two or three styling tools plugged in. It heats up fast and cools down pretty quick. The only problem I seem to have (and not very often) is that my hair sometimes gets snagged in the hinge of the flat iron.