What is that black junk that appears on the foot pads after wearing them overnight? Is that just dirt from the bottom of your feet or is it some chemical reaction that appears on the surface of the pad so it appears as if it came from your body?
What is that black junk that appears on the foot pads after wearing them overnight? Is that just dirt from the bottom of your feet or is it some chemical reaction that appears on the surface of the pad so it appears as if it came from your body?
Its junk. The reason they turn black is becuase a mixture of vingar and salts are inside of them and it reacts to the oils in your body.
They are a waste of money, look them up on MSN webpage, they did a study of them.