Nippon Sheet Glass (NSG) is developing a new range of UV-cut automotive glass product called UV Protect 400 which blocks 99% of UV rays (300nm-400nm), which includes the longer wavelength UVA (315nm-400nm) that can cause damage to deeper layers of the skin. The new technology can be used in all car windows and is said to be the world's first automotive glass to block UV radiation of up to 400nm wavelength by 99%.