Undiluted vanilla blend, scents akin to vanilla such as peru balsam, copaiba (copal) balsam, & vanilla oleoresin. If you choose to add this to your ultrasonic diffuser you will need to take extra care to clean your diffuser after each use. This is a dark oil which may also stain the diffuser. You will likely want to remove the orifice reducer & warm slightly before using as well. Undiluted, pure & all natural aromatherapy essential oil blends unique to Adirondack Aromatherapy. in glass tinted bottles with dropper tops. Vanilla Blend. Vanillas & Resins. 5 Ml