Does the kiyoseki hair straightener straightens african american hair?

If so, will it be straightened perminently.Does the kiyoseki hair straightener straightens african american hair?
I'm assuming it's a flat iron, so as long as it gets hot enough, it should be able to straighten black hair. And no, it won't straighten it permanently, you would need to get it chemically relaxed for it to be permanent. And even then, you have new growth when your hair grows.