BigDeal X is a 2-in-1 formulation that not only acts as a glass cleaner, but also is water resistant. The best part about this product is it leaves your glass streak-free! Don't get caught up in the specifics, just know this products biggest enemy is water; doing whatever it can to rid your windows of water during a storm. Spray a light mist onto glass then wipe off with a clean, dry towel or a microfiber cloth to ensure that #bigdealSHINE.