Designed explicitly for night-time visibility, plug-in night lights are generally safe to leave on through the entire night—just be sure to follow all manufacturer protocols for proper usage. To further increase not only safety but also energy efficiency, our Glow Night Light features Night Owl Mode, meaning it operates on a motion sensor that gradually increases the light’s brightness when movement is detected. When Night Owl Mode is on, it only emits light when necessary, not when you’re sleeping peacefully in bed.