A packaged tooth whitening product is provided. The package includes a substrate having a first side and a second side, wherein the substrate is sized for use in a human user's oral cavity. A first composition including a tooth whitening agent is disposed adjacent the first side of the substrate. A second...http://www.google.com.au/patents/US6916463?utm_source=gb-gplus-sharePatent US6916463 - Oral products having an aesthetic layer
