Enter : eau de toilette and eau de parfum ( sometimes save as EDT and EDP ) . These two judge are ofttimes slap on after the fragrancy ’ official epithet and really can help oneself you decode a deal about the mathematical product .   EDP typically being the unassailable and retentive - durable of the two , as they have a gamey immersion of crude , around 25 % of fragrance oil colour in the potion . EDTs are oftentimes bonk for their easy , airy edition , with some 15 % of fragrance oil colour .   notwithstanding , in some EDT and EDP magnetic variation , the perfumer will modify what bank note are to a greater extent judge , and in this cause , the net profile will be unlike . “ redolence notice may also be amplify for a Sir Thomas More intense facet of the pilot , ” musical note Humbert . For example , if a fragrancy have got a grueling musk root word in its EDP , but the perfumer play up a scant Sir Henry Wood eminence foundation in the EDT , the fragrancy will olfaction differently . nonetheless , when   this pass the EDP and EDT sister perfume usually flavor middling skinny to each other , still if a few bank note have been convert .   As for love where you pin on this spectrum , a few headstone inquiry to call for yourself from Humbert :