As different scents evaporate at different rates, a perfume doesn’t smell the same seconds, hours or days after being applied. Perfumers distinguish between head note, heart note, and base note to characterise this progression. “Knowledge by RUB” is made up of approx. 40 components. Several characteristic scents are listed in the head, heart, and base note categories below. However, a perfume is more than merely a sum of its components. This is because the substances affect each other, thus creating a sophisticated blend.
Substances that evaporate quickly, forming a person’s first impression
The heart of the scent, which emerges hours after the head note has evaporated
Heavy, long-lasting components that are perceived by the end of the scent period