Doing a hand-washing demonstration in a bright environment? No problem! Just use the GB Discloser Center. Place hands inside the Center as shown and turn on the GlowBar. Fluorescent particles left on hands will sparkle under the UVA illumination. The "ears" may be used to store GlitterBug Potion or Powder. Disclosure center measures 18"W x 10"H x 14"D. Glowbar, 4 D-cell batteries and an A/C adapter come with this unit.