I have been straightening my hair for 10 + years now, using clothes irons, thick curling irons, and multiple flat irons. Those techniques were successful, however the results were very temporary and caused a lot of damage to my hair. I have only been using the Chi for a short time, but I can see and feel a dramatic difference! My hair stays straight through out the day, even when I take my pony tail holder out... there's no waves! That has never happened to me before! My hair feels softer, and I'm not constantly adding products to get my fly-aways down! I have struggeled with these problems for as long as I can remember, but I don't think that will be the case anymore! I highly recommend this product to anyone seeking straight, healthy looking hair!