Whitening is, simply put, the process of whitening one’s teeth. Whitening can be done in a variety of ways. The first and most common is the simple upkeep of one’s dental hygiene. This involves making proper use of a tooth brush at least twice a day, flossing after meals, using mouthwash, and possibly ceasing to consume tooth-staining foods and beverages. Another, more drastic whitening process is the use of whitening strips. These strips make teeth look white while they are on, and whiten the true color of the teeth over time. It is possible to bleach teeth to make them whiter – this is actually what whitening strips do, just in a very low concentration. Natural whitening methods include eating proper foods which assist in the whitening of tooth matter. Such foods include, but are not limited to: apples, carrots, celery, and strawberries. Using baking soda to brush one’s teeth is a common old household way of whitening a smile.