It works! [SEP] I’ve been using this product for 4 days, once or twice a day, and have already noticed a difference. As others have said, make sure you don’t wear anything nice while brushing because this stuff gets everywhere. You will need to brush and floss afterwards.. this is not a substitute for toothpaste by any means. I went ahead and bought a different toothbrush to brush with this since I noticed my regular electric toothbrush head was still pretty dark after rinsing.