Are there multiple stains in your smile that you simply can’t seem to remove? The fact is store-bought products do not truly address the underlying stains that can appear. Staining and yellowing can occur as a result of the foods you eat or because your smile is aging. While there are many teeth whitening treatments available on the market today, there are few as personalized as KöR teeth whitening. To learn why a dentist recommends it to patients, keep reading!