These paints are very bright in black light, but the picture posted is not up to scale. The picture makes the tubes look decently sized, but they are about the size of acrylic paint tubes.
My son attended a black light glow dance and this paint was perfect. We watered down the paint and little and splattered it all over a white shirt and it showed really well under the lights. We also painted on his skin and that was great too.
Shipped quick, easy to apply, and super easy to remove, but it lasts forever too. Not sure about how it holds up with sweat. I fell asleep in it and it’s still on after all night. when it dries it doesn’t smudge or transfer and it also doesn’t dry up and crack off. Looks great in blacklight or regular light. My photos show a few of the colors in the package. It doesn’t really have a smell and it didn’t irritate my eye, and that’s surprising since my eyes are easily irritated by certain types of makeup.