This Aquaseal Sea Drops Anti-Fog Lens Cleaner is great for preventing a foggy mask.
Features of this product include:
Quick and durable in-field use Ideal for dive masks, sunglasses, eyewear, binoculars, ski goggles and more.
Provides maximum anti-fog capabilities
Up to 600 applications per bottle
Thick, well-wearing formula
One application supplies protection for an entire dive day or more under most conditions
Defogs dive masks in extreme conditions such as chlorinated water or extreme cold water dives
Never requires any buffing or drying
Make sure that you are able to see all the wonders that are hidden below the surface on each dive!