If you use a carnuba-based quick detalier after every wash, you'll get more life out of your wax. My take on #26 is that it lasts for about four weeks. If you use a carnuba-based QD, you'll get six weeks out of it. Your car will also look much better.
I use One Grand Show-Off, but there are many great carnuba-based QD's out there. You can pick the one that you like best.