These electric oil warmer lamps are unlike candle based oil warmers, you are in control. Use the dimmer to adjust the light to warm the oil a little or a lot, depending on how much scent or light you want. The oil lamp can serve as a nightlight. This lamp is safe to use in any area because it has no flame. Simply place scented oil or a wax tart onto the glass plate on the top of the lamp, plug it in and adjust the dimmer.