Roly,You can get away with not spraying with the can upside down to clean the tip with regular paint ,but with glitter, some glitter clogs the valve a little and next time you reach out for the glitter the cans empty.What im going to have to do is poke a hole in the can and shake or dribble the glitter on my project and then seal up the hole with duct tape $6-7-8 bucks a can i haven't learned yet to clean the valve.