on covalent nano-technology, Supernatural Glass Sealant creates a
chemical bond with glass to form an extremely durable water-repellent
coating. Visibility in rain is improved dramatically and it may even
extend wiper life. Will last approximately 6-12 months before recoating
is required. Please note that glass needs to be complete clean and free
of residue before application (use Dodo Juice Clearly Menthol or
Supernatural Glass Polish beforehand).