This set includes 2 packs of glow in the dark powder pigment for DIY crafts, fine arts, nail art, party decor, and other decorations. This orange-red pigment is ideal for mixing with epoxy, slime, nail polish, glue, silicone rubber, ceramics, plastic resin, and water based mediums like acrylic paints. The powder glows in the dark after being exposed to direct sunlight, indoor lighting, or for a more intense charge, use a bright direct light source.