When used internally it doesn't absorb into the body so it won't directly absorb toxins from a specific area unless it comes into direct contact with it....like your GI tract. But by pulling toxins out of the intestines it reduces your overall load of toxins and your body's own detox system...primarily the liver...is able to do its job better. You can also apply clay externally in packs or in a bath which can draw toxins through the skin.
I'll check out the site and get back to you on that later.