They found none of the product manufacturers were able to provide evidence for their kits' claims, or even give a comprehensive definition of what they meant by "detox".
"We concluded that 'detox' as used in product marketing is a myth," they said.
"Many of the claims about how the body works were wrong and some were even dangerous."
Australia's consumer watchdog Choice came to a similar conclusion in their review of detox kits in 2005. They suggest consumers save their money.
"Detox supplements provide little or no known benefit over a healthy diet."
"A week or two on a detox program won't absolve you from a year of unhealthy eating, smoking or drinking too much alcohol."