No one should stay in an infrared sauna longer than 40 minutes per session. A first session should begin with 20 minutes, increasing to, but not exceeding, 30 minutes in the first week. Two sessions a day are permissible for specific goals, such as detoxification or weight loss.
Infrared saunas are approved by the U.S. Food and Drug Administration to treat heart disease, arthritis, asthma, fibromyalgia and psoriasis. People can also use them to deal with weight issues, reduce muscular tension and provide pain relief.
The recommended temperature for an infrared sauna is 110 to 130 F and not higher than 140 F. Initial sessions should begin at 115 to 120 F with the heaters at maximum capacity to cause greater sweating. People using infrared saunas should drink plenty of water before each session and check with their physicians before using the sauna.