The differences are simply a matter of the amount or concentration of oils in the fragrance. " The highest concentration is in perfume (or parfum). Next would be Eau de Parfum, then Eau de Toilette, and finally Eau de Cologne. 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 the oils, the longer your fragrance will last, and the less you need to apply.

People with dry skin usually find their fragrance holding time shorter than those with oily skin because oily skin has more natural moisture to hold in the fragrance. PH levels (amount of acidity in our skin) also varies slightly from person to person. Our individual levels of PH will determine how each ingredient in a fragrance will react.

Fragrance lasts longer on some people than on others because of differences in our skin (oily or dry) and in our PH levels. To achieve a longer effect, try layering your fragrance. Using the fragrance bath gel, (if the company offers one), then the moisturizer or powder, and then the Eau de Toilette, Eau de Parfum or Eau de Cologne, will usually have a longer lasting effect. Also, apply your fragrance low on the body, as well as behind your ears and on your neck, so that the scent rises and you won't lose it as quickly. A light spray on the hair can last all day.

There is absolutely no difference in the fragrance. The difference is in the application only. However, a spray bottle, being ostensibly sealed all the time, may actually have a longer shelf life. Making the decision between spray and splash is entirely a matter of personal preference.

Cologne's fragrance will generally last much longer than After Shave. However, many men choose to wear both. The fragrance lasts longer, you can use less of each, and you get the facial benefit of an After Shave.

After Shave Lotion will usually sting as well as help close the pores after shaving. After Shave Balm is actually soothing to the skin. After Shave Gel also soothes the skin, but cools the skin as well and relieves razor burn.

Fragrances are comprised of many different scents, these scents are called "notes."
• Top notes are very light and last just a few minutes (5-10 minutes).
• Middle notes become apparent in about 15 minutes after application. These can last up to an hour or more.
• Bottom notes are the heavier ingredients. These last the longest, usually for several hours.

Keep all fragrance in a cool, dry area, and away from windows as sunlight can unbalance the various ingredients. An opened bottle should be kept in its box to insure a longer shelf life.