When combining scents, it is best to include a range of ‘perfume notes’ for the most impactful fragrances. Top notes (head) tend to be light, dissipate quickly, and are often citrusy and aromatic. The middle (heart) and bottom (base) notes of a fragrance are deeper, longer-lasting aromas and could be depicted as earthy. To create a balanced perfume scent, choose from all 3 note categories and have fun experimenting until you find your desired aroma. For topical application always dilute essential oils with a carrier oil (e.g. jojoba, fractionated coconut, etc.) or an alcohol (e.g. vodka, spiced rum, etc.). Also, do a skin test before full application. When using essential oils in an ultrasonic diffuser, do not dilute with a carrier oil. Only use tap water and enjoy the wondrous aromas that you create.