This varies from person to person. I met a middle-aged woman in Shanghai who was allergic to seafood and had a rash all over her body. She is weak and in poor condition. She went to the clinic and hospital for a few days, but she felt sick. Then she got up and returned to normal. Her face is as red as makeup and looks good. She was very excited and said she couldn't believe it. However, after her body returned to normal, she didn't feel anything after doing the rest several times! This means that the first two times are very effective, and the main people in the back don't have much toxins. And it's best not to do it too often, once a month.