Fragrance Concentration

Parfum extrait (PARFUM)
Has the highest concentration 15% to 40% (with 12 hrs + longevity) of all with

Eau de Parfum (EDP)
10% to 20% (usually about 15% )(6-12 hrs longevity)

Eau de Toilette (EDT)
5% to 15% (usually 10% ) (3-8hrs longevity)

Eau de Cologne (EDC)
2% to 4% (upto 2 hrs Longevity)

Some eau de toilette however are known to have much more longevity than stated. Likewise, Some Eau de parfums are known to have Less than stated performance hours.

Perfume overall performance is determined by so many factors.