I don't see any medical journal report, however there seem to be many people discussing the same online; just a quick search led to this Reddit thread that desc

I don't see any medical journal report, however there seem to be many people discussing the same online; just a quick search led to this Reddit thread that describes what I saw on my friends (i.e. damaged skin peeling off with healthy one underneath): https://old.reddit.com/r/eczema/comments/6cci0h/infrared_sauna_holy_cow/ https://old.reddit.com/r/eczema/comments/6cci0h/infrared_sau... I believe the "cold shower" mentioned later is necessary for any effect; my friends usually spend 1-2 minutes immersed in cold water after a heat cycle (arguably both improved blood circulation and immunity boost).