Night lights, also known as "Dream lights", are special lights used for night lighting. They provide for people who have difficulty falling asleep a quiet and comfortable sleeping environment. Night lights are usually made of light-emitting diode (LED) or light-scattering material. LED light is better than conventional lamps because it consumes less energy and radiates less heat. Light-scattering material produces a pleasant and soft light, which can be adjusted in brightness, and is available in a variety of colors. Night lights are an ideal solution for children's bedrooms who are afraid of the dark. The soft light that these lights provide creates a secure and safe feeling, and helps children to calm down before sleeping. For grown-ups, night lights can be used as a nightlight in the living room, hallway, or bathroom. In sum, night lights provide a safe and comfortable sleeping environment. They are ideal for both children and adults. In addition, they consume less energy and can easily be adjusted according to individual needs.