kung ako lang, its better yun separate shampoo that does'nt strip the wax, then kuha na lang ng easy to apply wax like Eagle One wax as you dry or megs quick wax....
You'd be better off with a separate shampoo and wax, the wax in the shampoo won't last. Anyways you can wax once every three weeks and use a quick detailer (megs, mothers, eagle1) for maintenance.