What do you think about Infrared sauna as Finnish sauna alternative?

When I hear about Infrared sauna as Finnish sauna alternative, I am not sure in its safety. I post an article:a href="http://saunabanyaspa.blo.com/2008/03/traditional-vs-infrared-sauna.html" rel="nofollow"http://saunabanyaspa.blo.com/2008/0…/a and I think that in traditional sauna, Russian banya and Turkish hamam we heat our body up from the outside. But in case of infrared sauna, we heat up from the inside. Is it a trouble?