In the context of essential oil blending, what does a 'top note' refer to?

A 'top note' in essential oil blending refers to the initial scent experienced that evaporates quickly. This is the first impression you get from an aromatic blend, often characterized by lighter, more volatile compounds that tend to disperse rapidly into the air. Top notes often have refreshing and uplifting qualities, with examples including citrus oils like lemon or sweet orange.

Understanding the role of top notes is crucial for creating a balanced aroma. While they provide the first layer of fragrance, they typically do not linger as long as middle or base notes, which follow after the top notes have evaporated. Therefore, top notes play a significant role in the overall experience of a blend, capturing attention quickly before the more complex and deeper scents (the middle and base notes) emerge.