As you know, there are many ways of blending. When it comes to perfumery, the oldest and most common technique that is utilized is combining top, middle, and base note essential oils. Top note is the first impression when inhaling a scent or blend. They are also the most volatile oils, dispersing and disappearing the fastest. Top notes can last in the bloodstream 2-4 hours typically act upon the human spirit. Effective top notes are delicate and light, usually sweet, fruity,