Signal Mouthwash Active Defense 250ml taps into the latest scientific findings to deliver a five times stronger anti plaque protection in only 30 days, while at the same time protecting your teeth and gums. It deeply cleanses to protect your teeth and gums, for an overall fresh and healthy mouth. This deep cleansing mouthwash is recommended for daily use, and helps improve your oral health and hygiene over a period of time. It provides more visible freshness in your mouth after every wash.