Usually, when you go to a picture framing store to design a frame for your artwork, your framer will recommend ultraviolet filtering glazing to protect the art from fading caused by light. All framers have seen the effects of light on their client’s artwork. Usually, fading happens over years, so the effects are not apparent until you compare the art to an original version. Works on paper are much more susceptible to fading than are oil paintings. That is due to the heavy pigment load in paint, while printing inks need to be more fluid and consist of lighter pigments and dyes that can be forced onto a thin piece of paper.
A tale of 2 vintage posters. Pianos Daude circa 1920, a very desirable and valuable poster, shows the effect that light can have on your art. When you go out in the bright sun, you probably use sunscreen to protect your skin. In the case of artwork, that protection is ultraviolet filtering glazing. Think of the glass or plex as sunscreen for your artwork. When your framer recommends UV filtering for artwork preservation, take the advice. More info soon.