Listerine Whitening Pre-Brush Rinse is slightly different from a regular mouthwash: as the name indicates, you use it to rinse your mouth prior to brushing teeth. Obviously, it has a more complicate formula that combines teeth whitening with the usual task of mouthwash - killing germs and fighting bad breath.
The first thing I had noticed when I tried Listerine Whitening was how it bubbled. It seemed to foam in my mouth as I rinsed, and the small amount I took quickly became a mouthful. So remember that you only need a little each time, which of course makes the product last longer. The second thing I noticed, after spitting it out and brushing my teeth, was how very clean my mouth felt. I can say that no other mouthwash I have tried has such a strong effect. It was a lasting effect, too: my breath stayed fresh for hours. As to the whitening, it takes time to see some results, but they are there. I noticed some after about three weeks of using Listerine White. Since my teeth are not stained, the results were not drastic, but there was some visible improvement. I am very pleased with this product.