What is the primary function of a blending chart in aromatherapy?

The primary function of a blending chart in aromatherapy is to identify complementary essential oils. These charts are designed to assist practitioners in selecting oils that not only blend well together in terms of scent but also enhance each other's therapeutic properties. Understanding which essential oils complement each other can greatly influence the effectiveness of a blend, allowing for more targeted outcomes in treatments.

While measuring the potency of essential oils and determining the shelf life are important aspects of working with essential oils, they are not the primary purposes of a blending chart. Furthermore, recording client preferences, while valuable for personalizing treatments, is a separate practice not directly related to the function of a blending chart. This makes identifying complementary essential oils the foremost purpose of such a chart in the field of aromatherapy.