hi..i dont have any longevity problems , all my fragrances and the colognes that i tried lasts on me at least 8 hours even some that dont seem to last a long time on many..but i dont have my colognes projecting and leaving a scent trail and if i got noticed , it is only during the first hour after i applied. i swear i tried to overapply (30 sprays) and there is no projection.. i am able to smell my self as long as my fragrances last but others dont !! what can i do !