In the infrared sauna your body is warmed directly by the heat from the infrared lamps that use electromagnetic radiation. Dry saunas, on the other hand, heat the air around you. This type of heat directed to the body is what makes infrared saunas a popular choice for many people. Infrared saunas also operate at a much lower temperature, usually between 120˚F (48.9°C) and 140˚F (60°C). And you can stay in them longer than dry saunas, for example.