I have used an IR sauna for years. When I first got it, I was advised by my physician to add the near infrared lamps. These are easy to purchase at most home stores (I bought mine at Home Depot). I was able to get the bulbs and also the lamps to hold them (these were called "brooder" lamps at the store, and are commonly used to keep farm animals (poultry mostly) warm in winter).
Some may remember these as the red "heat" lamps that used to be seen in hotel bathrooms years ago. Anyway, I use mine for exactly what liverock suggests, that is to remove ammonia, since I have the CBS snp. I do know that my wiping towel does smell strongly of ammonia when finished. I have preferred to address the overabundance of ammonia using a sauna, as opposed to using something like yucca, as some suggest.
I had to slowly increase the amount of time, and found that supplementing with minerals has helped also (again, only if you can tolerate these), as minerals are also lost (according to my doctor at the time). My experience seemed to validate this, because as soon as I added in the minerals, I no longer experienced the light headedness and energy drain that had occurred following sauna use.
