Some perfumes may categorized as Perfume / Parfum. Perfume/parfum is the most high concentrate and can lasting for up to 8 hours. Perfume / Parfum also referred to as perfume extract, is the most concentrated formulation, and is usually the most expensive. It contains 15-30% aromatic compounds. Due to its high amount of aromatic compounds, it also tends to last the longest when applied to the skin. It is usually sold in small bottles of 1 ounce or less.
EDP - Eau De Perfume
Eau de parfum, also called eau de perfume or EDP, is the next most concentrated formula, and one of the most popular purchases. It consists of 10-15% aromatic compounds.
EDT - Eau De Toillete
Eau de toilette is also a popular choice, and is less expensive than the perfume or parfum formulations, although its scent will not last as long when applied to the skin. Eau de toilette contains 5-20% aromatic compounds.
Cologne / Eau De Cologne
Eau de Cologne originated in Cologne, Germany. Today, it is a generic term that defines a class of scented formulations by its typical concentration of about 2-5%. Cologne products are available for either men or women, and are sometimes mistaken for aftershave, which is actually a formula containing moisturizer, an antiseptic agent, and perfume. In addition, aftershave can be a gel, lotion, or liquid.