Simply fill the top bowl with water, add a few drops of essential oil and light the little candle. The top bowl of these diffusers are close enough to the flame to release a delightful scent into the air.
Try blending essential oils for added depth and richness. Here are few of my favourites but the combinations are endless.
CAUTION: Do not allow the water to completely evaporate. Often a little oil remains when the water is gone. Simply add more water and continue to enjoy.