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). 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. Features of the Hair Tools Training Heads. Reinforced base for perfect vertical fitting. DISINFECTION CERTIFICATE: This item has been chemically bathed and disinfected by steaming to ensure optimum safeguards. HUMAN HAIR DISINFECTION PROCEDURES: Hair is boiled in water for six (6) hours, then washed in clear water. Next it is placed into acid bath for 5-20 minutes, then washed in sodium hydroxide to neutralize acids. Afterwards, it is washed in clear water, then it is rinsed in a bath of H2O2 (peroxide) with ammonia, and again washed in clear water.
The hair is then shampooed, conditioned and air dried naturally.