In an attempt to return back to school looking and feeling like a new person, I have been detoxifying using detoxifying footpads. They are supposed to absorb all the waste/toxins in your body:you place them on your feet overnight. so to begin with the pads are quite dark in the morning and then should get lighter to show that the toxins are being removed from your body. Third day in and they were darker than ever this morning. Have I bought colour changing pads or do they really work?