UV radiation is known to contribute to the chemical modification of exposed coating surfaces, resulting in loss of gloss, color change, chalking, and eventually, destruction of the film. NanoArc® Zinc Oxide Dispersions provide superior performance, beyond conventional UV Absorbers for exterior coatings, due to their broad absorption spectrum and long-term stability. In addition to long-term gloss retention and color fastness, NanoArc® Zinc Oxide may also help improve tannin and stain blocking and provide improved coating durability with limited effect on transparency.