Our Pure Essential Oil Reed Diffusers contain no alcohol, water, petrochemicals, or preservatives – only 100% pure essential oils – a SunLeaf exclusive! When assembled, the essential oils in each bottle absorb into the natural reeds to gently fill the room with a fresh, clean aroma. Each beautiful signature scent is composed of balanced blend of essential oils. Zero alcohol makes for a long-lasting aroma: 1 oz Reed Diffuser: 2-3 Months.