Of course it's fake. This is just a simple direct selling scam. If it was useful, it would not be popularized in such a small scope. I must let you join the club. As a member of Fengshengyuan Marketing Department, we tell you that the testing instrument is controllable on the stage, and the experiment is only suggestive. The factory production is very poor, and people in the company can hardly wear it except going out to the salon.