GearAid SeaBuff is a handy treatment to keep in your gear bag to prepare your mask and clean your slates. The gentle granules add a bit of abrasion to the treatment to move residue and clean your masl lens and slate. New masks often have a microscopic residue of release agent that can cause them to fog up easily. SeaBuff can help to remove that residue to keep your mask from fogging. Removing pencil marks from slates can be hard so your slate ends up more grey than white. SeaBuff can help remove stubborn marks and get your slates back to white.
Always ask your mask manufacturer before you use SeaBuff on the glass and test a small area first. Do Not Use SeaBuff on plastic lenses as they will scratch.