With so many incredible essential oils at your disposal, knowing how to properly use each one can be quite the task. Fortunately, these reference cards provide all the details you need on each Youngevity Essential Oil. From suggested carriers to safety tips, these cards make it easy for you to learn how to properly use each essential oil and are also a great marketing tool to share with individuals. Includes Reference Cards for Single Oils, Special Blends & Carrier Oils.