This helps to capture toxins your body eliminates through the outer layer of the skin. The patches are adhered like a big sticker to the soles of the feet overnight. At first, most people use the pads on the arches of the feet. Every night, a new patch is applied to your foot. Successive nights should result in a gradual lightening of the patch. Do not reuse patches. Once the feet no longer darken patches used overnight, patches may be applied to the skin on other areas of the body. Do not use on sensitive areas of the body or the face. Depending upon what specific toxins are present, the color stains typically ranges somewhere between a green, grey, black, brown, or tan coloration. Individual results may vary. These results are not typical. Why are these pads applied to the soles of the feet? According to Chinese medical knowledge, our human body has over 360 acupuncture points. More than 60 acupuncture points are found on the soles of the foot! Ancient Chinese Reflexology teaches that stimulation and toxicity.