Most screen protectors show wear (scratches) over time, but I've found that applying a drop of 'Armor All', using a piece of tissue, to the center of ANY screen protector and then wiping the entire screen, works wonders. Benefits include a reduction in the appearance of any scratches, smoother stylus movement, and extending the life of the existing screen protector. My understanding is that Armor All is a silicone-based substance. As a side note, the use of it has NOT created any blurring on any protector that I have in use.