2-in-1 Formula - Alcohol-free lens cleaner and defog for dive masks that works in all water temperatures Concentrated - One 1.25 fl oz bottle contains 530 drops to clean and treat multiple masks/lenses; won't harm silicone or rubber parts Long-Lasting - Enjoy fog-free vision for hours with just a drop and quick application Compatible - Effective on all types of glass and plastic masks including scuba and snorkel lenses Note: Not for swim goggles or dry lenses (e.g., eyeglasses), instead use Gear Aid Anti-Fog Spray