Polident Retainer & Mouthguard Daily Cleanser has been developed with Crystal Clear Technology - to help keep your dental appliance looking clear. The cleaning formulation is designed to lift stains, and remove discolouration and odour-causing bacteria to help maintain the cleanliness, freshness, and transparency of your dental appliance. To use, drop one Polident Retainer and Mouthguard Cleanser tablet into enough very warm (not hot) water to cover your dental appliance. Soak for 3 to 5 minutes before brushing your dental appliance with cleanser solution using a soft brush. Discard the remaining solution immediately after use. Rinse the dental appliance thoroughly with running water before putting it back in your mouth.