The Montana Nightglow spray is a revolutionary new paint which stores light during the day and emits a temporary, radiant glow at night. Although this spray can be used on it\'s own, Montana recommend painting on top of a white primed surface and finishing off with a varnish to ensure the Nightglow is fully protected against the elements. Check out some samples here , straight from the horses mouth. Montana Nightglow Luminescence effect paint 400ml Sized Can Luminous pigments Temporary glow-in-the- dark effect Charged from light source Nightglow