I downloaded this app a few years ago after reading about it on a favorite bloggers site. She was very impressed. I checked a few things I use and a few things the blogger was throwing out. I have a BS, MS, and doctorate degree in the sciences. My masters is in Environmental Sciences. I have always worked in the biological sciences. I found the app information and scoring quite alarmist. Here’s an example. Selsun Blue is listed as toxic. The reason because it has Selenium. Selenium can be toxic. But it is also an essential mineral for animals. So just stating it is toxic is silly. A short exposure to selenium in your shampoo should not be harmful. In fact tinea versicolor a fungal infection of the skin can be treated by applying Selsun Blue to your skin and waiting 20 minutes before showering. So the suggestion that simple use of Selsun Blue as a dandruff shampoo is dangerous because it includes selenium is at least misleading. I haven’t used the app in a few years. What lead me to comment today is the fact that this app has started sending me notices. It is pushing products.