What is the difference between Pure Perfume, Eau de Parfum, Eau de Toilette, and Eau de Cologne?

The difference is only a matter of the amount or concentration of oils in the fragrance. The highest concentration is in pure perfume (or pure perfume). Next is Eau de Parfum, Eau de Toilette later, and finally Eau de Cologne. Some manufacturers make a solid perfume, solid perfume is as strong perfumes but the pure gel consistency.Eau like De Toilette and Eau de Cologne are generally interchangeable, particularly in Men Perfume. After Shave has the least oil. The higher the concentration the longer your fragrance will last, and the less you need to wear them.