I have done several foot baths and it definitely is not anything to be feared. It is just 20 minutes of soaking your feet in warm water and you would not believe the junk that comes out of there!
The concept behind it is that our body is designed to where the toxins are supposed to come out of our feet. In nature we would be barefoot and have our feet on the cold earth which would draw the toxins toward them and allow them to do their thing but everybody wheres tight shoes and socks so we kind of eliminate this natural function.
All the times I did a Ionic foot bath the water turned dark brown and this gunky mud-like foam would collect on the top of the water. It was brownish orange and had a little bit of white foam in it. Whatever that crap is I do not want it in my body!!
Doing this did not make me feel any different or give me any kind of a detox reaction. It is very mild. It just felt good to know that this junk was out of my body.
With every consecutive foot bath I did I noticed less and less junk coming out which shows it was working.