AfterDark Foam Concentrate produces foam that fluoresces (glows) under ultra violet lighting. Our concentrated can be used with all foam machines. Under normal daylight, the foam colors are bright neon. Our concentrate is designed to be used as an additive to standard bubble juice or foam solutions. Our concentrate is made using non-toxic pigments. Usage instructions are simple. Mix 1 quart of our concentrate to 7.5 – 10 gallons of ready to use foam solution. We recommend using a paint paddle and electric drill for quick mixing.