Formats and concentration
Which perfume concentration lasts longer
Concentration can influence fragrance wear, but it cannot reliably rank every perfume by duration. Composition, application, conditions and perception also matter, so compare exact products rather than assuming a universal EDT-to-extrait ladder.
A HUME Fragrance buying guide

Ask what lasting means
A faint close-range trace and a noticeable scent around you are different outcomes. Define which experience you want before comparing claims.
Compare similar conditions
Record the exact product, application and wearing setting. A sample's spray output can differ from another atomizer, so avoid pretending equal spray counts guarantee equal amounts.
Separate preference from persistence
The longest-lasting candidate is not automatically the one you enjoy most. Record the later character and whether you want it to stay, not only whether something remains.
Try this before you buy
Track close-range presence and overall enjoyment separately during two ordinary wear tests.