The use of hairdryer can not play a disinfecting effect. 56 ℃ to maintain more than 30 minutes, in order to kill the new coronavirus, so the hairdryer hand and face blowing 30 seconds, can not be disinfected. 1, the temperature of the hair dryer can not reach 56 ℃; 2, even if the hair dryer can reach 56 ℃ or even higher temperature, the hands and face continued to blow 30 seconds, there is no disinfection; 3, when the temperature and time to meet at the same time, will cause skin burns and other skin damage, this operation is not worth the loss.