PERFUMES CLASSIFICATION
Evaporation notes

TOP NOTES
Top notes, sometimes called head notes, are those aromas that can be first sensed, and they are also the first notes to dissipate. Ingredients that give off these notes consist of lightweight molecules that evaporate quickly. These notes are very important for selling the perfume because they are the first smell that consumer senses when testing the perfume. Examples of top notes are bergamot, basil, eucalyptus, cinnamon, clary sage, grapefruit, lemon, tangerine, coriander, spearmint, thyme and others.
HEART NOTES
Heart notes, also known as middle notes first appear just when the top notes begin dissipating. These notes, such as rose, jasmine, ylang-ylang, and vetiver, make up the the heart of the perfume. Sometimes heart notes are chosen to mask base notes, that can at times be unpleasant before the dry-down period begins. Heart notes are usually more mellow and can appear in the aroma anywhere from a few moments to an hour after the perfume is applied.
BASE NOTES
Base notes, also reffered to as bottom notes, bring both depth and tenacity to a perfume. These aromas are the ones that last the longest. They first appear as the heart notes start gently folding away, and can sometimes even last for days. The molecules of base notes are very heavy, evaporate very slowly, and their scents are usually rich and strong. Examples of base notes are sandalwood, patchouli, musks, and vanilla.
