All Hair Tools Training Heads are made from 100% Human Hair, which is suitable for: ~ Hot styling with straighteners, curling Irons and hairdryers (Max temp – 200). ~ Hair colouring. Apply heat to speed up process time for better results. ~ Permanent waving. Apply heat to speed up process time for better results. ~ Cutting with scissors and razors. (not with dull scissors / razors). ~ Long hair styling and updos ~ Density: 200-230 Hair/cm2.