I don't know if your talking about a specific brand, but i had a friend who had to detox in ~2 days who bought and used every detox product our local headshop sells. While he ended up not getting tested, we picked up a drugstore test and he failed. Now i know those tests are very falible, that he had been smoking pretty heavily, and that you may be using a more quality detox product, but in my experience they are crap and your best bet is just to flush nonstop. You may even want to continue flushing after the test, because the last test i took at a lab through my psychiatrist (passed, flushing FTW) who warned me that they may test you again a few days later if they get a bad result (whatever that means).
Summary: Detox products don't work, flushing does
