Understanding the Different Concentrations of Perfume and Their Significance Perfumes come in different concentrations, each representing the varying levels of fragrance oils and alcohol. The concentration of a perfume determines its intensity, longevity, and overall potency. ... Eau de Parfum (EDP) — The Sweet Spot Eau de Toilette (EDT) — The Everyday Classic Parfum / Extrait de Parfum — The Most Intense What Is Perfume Concentration?