ROYAL CANIN? Oral Care is a precisely-balanced nutritional formula that helps maintain your cat's oral health by reducing the formation of dental plaque. It also contains a high protein content to support and strengthen your cat's muscles, bones, and teeth.When looking for a diet that benefits your cat's teeth and oral vicinity, it's important to be aware that ROYAL CANIN? Oral Care performs two actions: Mechanical and Chemical.ROYAL CANIN? Oral Care is specifically designed for targeted action, the Oral Care kibble size, texture and shape encourages cats to chew thoroughly. This mechanical action produces a daily tooth brushing effect that helps reduce the formation of dental plaque on teeth.This formula is also enriched with an ?active dental agent' (calcium chelators) which performs a chemical action by trapping the salivary calcium to help limit dental plaque mineralisation.ROYAL CANIN? Oral Care has been clinically proven to show results after just 28 days of continued use, reducing up to 59% of tartar formation.