Nano-Brite Vision Glass ceramic coating is a 1-2 year protection that repels water and dirt. Safe driving, clear vision and easy clean effect transform your car windows. Vision will reduce the use of your wiper blades all water droppings will slide right off. Dramatically increases visibility–better than new, better than waterproof waxes, this is a nano-coating. Developed and well-known for effectively coating glass and mirror surfaces of cars against stains and water damage, GlasShield is the best and most efficient product in the market for rain repellency, meaning it’s also the best for ensuring driving safety.