If you haven't tried Go Smile yet, please consider it! This is the easiest to use and least abrasive tooth whitening system I've ever tried, and I think I've tried them all! The best part? You don't need to use the product every day from now until eternity... just for 2 weeks, twice a year!
All you need to do is brush your teeth as normal and then grab one of these handy-dandy capsules! Take the cover off of the capsule and place it on the opposite end. Squeeze the capsule in the middle until you hear it 'snap' and then squeeze until the soft applicator is covered in whitening goodness. Do not eat or drink for 20 minutes... Do this every morning and night; then two weeks later, all of your coffee damage is gone!
I purchase mine at Sephora!
I am not familiar with the other 'steps,' but I do know the maker offers breath spray and toothpastes, etc.