When masks are shipped, the glass is coated with a silicone layer to protect it during transport. This typically causes fogging in the mask and if you don’t scrub it first it will cause any defog you add to absorb into the silicone, making it difficult to see and not prevent fogging as it is designed.
When you first get your mask, you will need to take a dime size drop of mask scrub to each side of the inside of your lenses and scrub it with a finger or soft bristle toothbrush for approximately 10 minutes. If this is a brand-new mask, you will need to repeat this step 2-3 times to ensure the removal of the silicone layer.
As Standard upkeep for your mask, it is recommended to scrub it before/after any dive trip. *If you have prescription lenses in your mask, please talk to a retail staff member for specific care for your lenses.