Hi every one
I have a question that i hope you can
help me with, i bought some glow powder
in different colors and have to mix i with paint
but when its fully charged, it then only glows
for 1 hour after sunset, it has to glow for a whole night.
My question is, if there is a material that i can add,
so that the glow time is much longer ???
With Friendly Greetings