Be deeply suspicious whenever the word "
detox" is used about a product. It exploits the nonsense notion that the efficiency and/or rate of "toxin" removal can be improved (I put inverted commas around "toxins" because these are mainly the by-products of digesting and/or metabolising food. Generally, the human body is tolerant of such "toxins" within fairly narrow limits – if you've ever had food poisoning, you'll understand this well. The "toxins" are flushed from the body through the work of the liver and kidneys, and claims about improving this process are, to a high degree of probability, bogus.
These pads probably react chemically with dilute urea (or possibly some mineral salts), which we humans secrete on perspiring. You can test this theory by placing a few drops of fresh urine or perspiration on the pad

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'Luthon64