The products include toothpastes, oral rinses, sprays, drops, gum and lozenges. Temporary hair color is available in various forms including rinses, shampoos, gels, sprays, and foams. These may be topical sprays, rinses and collars or systemic oral insecticides. It dissolves and rinses quickly in hot water. Washing machines perform several rinses after the main wash to remove most of the detergent. After brushing, one chews a tablet and rinses. Tetrasodium pyrophosphate is used in commercial dental rinses before brushing to aid in plaque reduction. Anti-cavity mouth rinses use fluoride to protect against tooth decay. Some bath salts act as water softeners and change the way soap rinses. The woman is sprayed with disinfectant spray, as Peter quickly rinses himself off. Prescription fluoride rinses can adequately treat the condition as well. Fluoride mouth rinses can be professionally applied by a dental professional or used at home. In areas without fluoridated drinking water, these rinses are recommended for children. Bluing is not permanent and rinses out over time leaving dingy or yellowed whites. Fluoride mouth rinses range from 0.05% to 0.2% (225-1,000 ppm) in concentration.