How Aqua Filters work: A. Cigarette smoke containing tar, nicotine plus other substances enter the Aqua filter. B. Aqua filter's exclusive wet filtration system removes a significant portion of these substances (scientific research confirms that wet filtration is the most effective method to remove the tar and nicotine from cigarette smoke.) C. You inhale cleaner, cooler smoke. Easy to use, each pack contains 10 disposable aqua filters, each aqua filter can be used for a full pack or more of cigarettes before disposing.