This freaky light shines like a regular bulb when it's on, but turn off the power to reveal a unique glow. The 7.5 watt bulb is dipped in a non-toxic, non-flammable silicone that shines a vivid neon after it is exposed to a light source. Bulbs have a standard base and afterglow of up to 6 hours. Choose Blue, Aqua, Green, or Yellow-Green.