It is an innovative, thermally activated straightening system that can be used on normal or colored hair. It lets you modify your hair's texture permanently, its exclusive formula is heat activated at 430 °F (221°C) temperature. Creates permanent hair straightening without irritating the skin or scalp. Tec Italy Liscio 430 °F can be used for special haircuts to redirect hair and make it stay the way you want it without having to style it.