A straightener that harnesses the conductive energy of germanium plates to deliver high-precision temperature control for ultra-smooth, frizz-free results. Hair Type: Straight, Wavy, Curly, and Coily Hair Texture: Fine, Medium, and Thick What Else You Need to Know: Sleek, smooth plates contain a mix of the most efficient heat conductors known to styling: germanium particles embedded in a base of ceramic and tourmaline. The supercharged combination emits negative ions and far-infrared heat to ins