Product review (5 stars): I'll never use anything else!
I've owned one for 5 years. My old one recently broke in a move so I had to order new.  I used to have to blow dry my hair and then flat iron or the frizz was out of control. Now I simply use this and go.  I have fine hair but very thick.  Takes me about 15 min total to do my hair and ends up with large, bouncy waves.  You must do your hair in sections like you would a flat iron.  Note,  my daughter has very straight, fine hair.  Nothing curls her hair...not even this!