I used to use a hair straightener called Kiyoseki. Its supposedly suppose to have some kinds of minerals made from in Japan built into the tool. Advertising got me. It was cute but wasn't worth 160 dollars. What a waste.I heard those hot oil treatments or something like that at the salon are good for making the hair straight.I forgot what's it called.But over all else this is my opinion on the Kiyoseki hair styler.