There are many teeth whitening kits you can buy over the counter. While they do work, the whitening agent must be diluted a lot to be sold without a prescription. Instead of having to use them repeatedly to get the look you want, call us today to get cosmetic dentistry treatments. You can choose between custom whitening trays and prescription-strength Crest Whitestrips. Both have the professional-strength whitening agents that only dentists can provide.