What are vaporizers? Vaporizers - tobacco evaporation system. Tobacco, being in a vaporizer, is heated to a high temperature (from 150 to 220 ° C). Thus, the active substances in tobacco are evaporated. Note that only active substances are evaporated! And tar, carcinogens, and other harmful substances in tobacco do not get into the smoke itself. They remain in the vaporizer flask itself. Compare the ash from a regular cigarette and what remains from tobacco in a vaporizer and you will see how much harmful substances are in ordinary smoke.