evidence to support their claims: An ADA statement of efficacy for teeth whitening products. This is a general statement, though, and doesn’t specify the method Steel Bite Pro uses to whiten teeth. A March 2011 study conducted by Essex Testing Clinic, Inc. based out of Verona, NJ that resulted in up to an 18% improvement in teeth shade after a single application of a gel. The product is only referred to as “Teeth Whitening Gel Formula,” and Steel Bite Pro is not mentioned specifically. Fortunately, the HighYa team has reviewed many of the most popular online whitening systems over the years (more about the next), and in almost every instance, they use 22% carbamide peroxide. Perhaps this is the carbomer Steel Bite Pro’s manufacturer is referencing on their website, since when applied to teeth, it breaks down into hydrogen peroxide and urea (22% carbamide peroxide equals a little more than 7% hydrogen peroxide).