Detoxification foot patch is a patch for sleeping at night, which is torn off when you get up in the morning. I bought it for the elderly at home before, and the effect is quite good, at least it won't be constipated. I tried sticking it on the outside of my feet, for example, my thighs didn't respond at all, which was not as exaggerated as what I said upstairs. If I didn't stick it, it would change color. I remember buying a bamboo liquid foot patch for clearing away heat and toxic materials, which was produced by a factory in Tianjin.