dōTERRA has created 2 chemistry wheels to help you better understand the chemistry behind each essential so you know when and how to use oils to achieve a desired benefit.
The first wheel gives information on oils high in monoterpenes (oils that have a 10-carbon backbone). This side of the wheel describes oils with uplifting properties, and the other side presents oils with leveling properties. The second wheel contains information about oils high in sesquiterpenes (oils that have a 15-carbon backbone) on one side, with a legend on the opposite side. In each of the chemistry wheels, the oils are further organized by functional group, with the top one or two chemical constituents listed under each oil.
The oils are also grouped according to their shared key properties. This provides a starting point for understanding how to use the oils. The combination of these characteristics and properties assists you in creating blends that work well for you.