How does SnapBright Purple Teeth Whitening Gel work? It utilizes color-correcting technology to improve the appearance of tooth color. The formulation consists of a meticulous balance between two water-soluble dyes to form a deep violet tone. SnapBright is the first and leading oral care brand to leverage color correction to naturally whiten and brighten teeth. It is powered by purple oral care formulas that are clinically proven to cancel out the visibility of yellow dental stains. Whitens naturally with regular use. Its color-correcting technology makes teeth whiter, brighter, and shinier. It also helps protect tooth enamel against the effects of acid erosion. It effectively strengthens teeth and fights cavities providing you a fresher breath. OUR GUARANTEE We are confident that we offer some of the best products on the market. Therefore, we provide a 30-day guarantee. We will make every effort to ensure that you are completely satisfied with your purchase. Online shopping can seem daunting. We want you to know that there is absolutely zero risk of purchasing something. We won't make it difficult if you don't love it. We offer email and ticket support 24 hours a day, 7 days a week. If you require assistance, please contact us. Please contact customer service if you have any problems with your purchase.