Walk down any fragrance aisle and you will see the same name printed three different ways: Eau de Toilette, Eau de Parfum, Extrait de Parfum. It is not marketing filler. Those words describe how much perfume oil is actually dissolved in the bottle, and that percentage quietly controls everything you care about — how strong it opens, how close it sits to the skin, and how many hours you will still catch it on your collar.
The rough ladder runs like this. Eau de Cologne sits lowest, usually a few percent oil, bright and short-lived. Eau de Toilette lands around 8 to 12 percent — fresh, easy, a few hours of wear. Eau de Parfum, the tier most Arabian houses build around, climbs to roughly 15 to 20 percent, which is why a good EDP can carry from morning coffee to a night out. Extrait de Parfum, sometimes just called Parfum, is the richest, often 20 to 30 percent or more, worn in dabs rather than sprays.
Higher is not automatically better, though. A crisp citrus is designed to be an EDT — load it with oil and it turns heavy. A smoky oud or a dessert-sweet amber, on the other hand, rewards the extra concentration with depth and staying power. When you are comparing two flankers of a scent you love, check the concentration first; it usually explains the price gap and the performance gap in one line.
Our rule of thumb: buy the EDP for your signature, keep an EDT for hot days, and treat an extrait as the thing you reach for when you want to be remembered. Every bottle we auction lists its concentration on the page — so you always know exactly which version you are bidding on.