A specially formulated hydrophobic (hates water) wax blend, designed to repel water and keep your helmet's face shield (...and all plastic optics) cleaner and clearer in wet conditions. Works a bit like 'Protectall', but this one has been optimized for optical rain repellency applications, similar to how glass-only 'Rain-X' works. 4 oz. spray formula for up to 150 applications. USA.