Apply to protect your glass, and make CLEANING SO MUCH EASIER EACH TIME YOU CLEAN. Even if you forget to clean for weeks! Cuts cleaning time up to 90% - Creates an easy-clean shield like a non-stick fry pan; water and oil bead up on the glass, repelling hard water, soap scum and grime. A little cleaning is still required, but it is FAR easier each time you do clean, and frequency is reduced. Its not a cleaner, its a ultra long lasting INVISIBLE coating - Just one application lasts beyond 3 Years! and comes complete with a 3-YEAR LIMITED WARRANTY. ----- Each kit will treat 40 ft². EnduroShield Home is the Consumer strength formulation of our industry-leading factory-applied EnduroShield Professional which is applied by many of America's leading shower door manufacturers. Editorially featured in Time Magazine, Popular Mechanics, House Beautiful, HGTV Magazine, Good House Keeping, This Old House, also Oprah’s first WoW Product!