A dentifrice dispensing electrical toothbrush using a replaceable dual-channel brush head. The conventional black currant anthocyanin compositions have a low black currant anthocyanin content, strong acidity and poor stability, which makes them unsuitable as additives for foods and drinks. In another, charges for entertainment content are assessed based on the percentage actually rendered to a consumer. For each attempt by one of the plurality of subscribers to access one of the plurality of local area networks, the method includes the steps of: receiving at a gateway at a wholesale service provider network a request from the one of the plurality of local area networks for authenticating the one of the plurality of subscribers.