Refreshing Diffuser Blend CollectionRefreshing Diffuser Blend Collection The diffuser bundle features three pre prepared essential oil blends giving you options to enjoy at different times depending on the season, whats going on in the home, or just your mood at the time. Featuring a bright Breath blend, a woodsy Forest blend, and an invigorating Focus blend, there is an aroma for every room and every mood. The handcrafted, ultrasonic diffuser available in black or white is easy to use