Are Detox Foot Baths a Hoax?

We've all seen the advertisements.  Soak your feet in an Ion / Detox Foot Bath and watch the water turn a bright shade of orange or brown as the nasty gunk leaves your body.   A reader writes:  "Are those Detox Foot Baths really helpful?  The spa I use is now pushing them at $45 for a 30 minute session and guarantees I'll be amazed, but I'm really dubious."

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