For more about the fading of colors, see the FAQ “How fast do prints fade?
Katsukawa Shunei. Those wishing to display their prints in frames with UV plastics must therefore recognize that UV filtering will NOT block out 100% of the UV, nor will it will protect against the remainder of the visible part of the spectrum, which constitutes more than 90% of the remaining wavelengths of radiation. Conservators worry that those who frame their prints with UV filtering will develop a false sense of security, thinking that they have protected their prints against all light damage, which is not true. In addition, some colors will receive no protection at all from UV filtering.
