Glow in Black Light! Glow parties are fun for all ages and our new Glow Party paper goods are great for all parties and fabulous for parties with black light as they are blacklight responsive. Even though they do not glow in the dark they can be accented with lots of our glow accessories for a great party. Our Glow Party 9 oz. cups are sold 8 to a pack. Please order in increments of 1 pack.