My hair is almost waist long (when straightened), coarse, and naturally wavy. If I don't straighten it or use lots of product to achieve the "wavy beach" look, it is frizzy and looks unkempt. I've gone through many flat irons and the problem I find when looking for the right one is the price and heat retention. Used this one the other morning on high setting with dry hair and it produced bone straight results which lasted until I washed it late that evening. The extra shine was a nice surprise. I'm a licensed cosmetologist with more than 15 years experience and was able to maneuver and create curls with the flat iron, before I straightened my hair. Yep, it works for me and my needs. Would buy again.