The SANTORINI SUNSET Wallflower Refill Bulbs by Bath & Body Works are a set of 4 traditional-style, oil-based air fresheners designed to be used with a wall plug-in. These 100% concentrated refills come in a glass bottle with a clear color and a beautiful Santorini Sunset scent. The bulbs offer features such as diffusing and odor eliminating, lasting for more than 2 weeks each. With smart home compatibility with Amazon Alexa, these Wallflower Refill Bulbs are a convenient and stylish addition to any living space, providing a pleasant aroma throughout.