While the Scope White Mouthwash works very well as a mouthwash for cleansing and fresh breath, it is completely ineffective as a whitening agent. I used the Scope White Mouthwash every day for at least four months, and my teeth did not get any whiter than they had been before. It does not work at all and does not perform the way that they advertised on television, in magazines, and in other venues. The taste of the Scope White Mouthwash is not altogether unpleasant. It is strong enough to last for a while after each use, which is important to my husband and myself. I appreciated that it lasted longer than some other mouthwashes that I have tried. The Scope White Mouthwash does not work well as a purifying agent for oral thrush, which is a side effect of using steroid-based nasal sprays (like Flonase) or steroid-based inhalers (for asthma). That was a disappointment for us.