32 oz Citrus II CPAP Mask Cleaner is a unique formula designed for effective cleaning of ALL Types of CPAP BiPAP and Oxygen Therapy Masks Tubing and Accessories Safe and gentle to use it will not harden crack or deteriorate soft plastic with repeated use Use daily to remove dirt oils and prevent the build-up of organic material Citrus II CPAP Mask Cleaner cleans deodorizes and refreshes leaving no residual after-odors Gentle ingredients are derived from corn coconut and citrus