-The Carxent leather scent is easy to use and it will last for quite some time once it is applied. Perhaps you have a vehicle with a leather interior that has lost the fabulous scent. All you have to do is spray it all over the carpets, underneath the dash and seats. You are sure to see that the smell will last for quite a while, making you feel as though your leather seats are brand new or even re-upholstered.