What are the different strengths of perfumes?
-info from dpsmalaysia.com
The concentration of perfume oil or essence determines the strength of a fragrance. Actually, Eau de Toilette and Eau de Cologne are generally interchangeable, particularly in Men's fragrances. After Shave has the least amount of oils. The higher the concentration of "essence" the longer your fragrance will last, and the less you need to apply. The Following table shows the different concentrations. However, it may vary depending on the brand and country.