ShowerGuard glass is a kind of glass that’s protected during manufacturing with a patented ion beam process. This technology permanently seals the glass surface, for a shower that stays beautiful forever with just a minimal amount of cleaning. Unlike spray-on or wipe-on treatments that eventually wear off, the protection is part of the glass itself, so it never needs to be re-applied. UltraWhite’s low-iron raw material formula increases light transmission and colour neutrality while reducing greenish tint in standard glass (most apparent when viewed from the edge. Ordinary glass is prone to damage and aging from hard water, soap, humidity and more. Water described as “hard” is high in dissolved minerals, especially calcium and magnesium. Over time, these minerals can build up on shower glass, making it appear dirty or cloudy.