I am a big fan of the spray wax available today, so I thought I would give the NXT Booster spray-on wax a whirl. I didn't use it over the NXT Wax, I just used it like any other spray on wax. I must say I was a little dissappointed. In comparison to Tutle Wax Express Wax. I found the NXT Booster wax much more difficult and time consuming, and the shine wasn't noticibly different. Unless this stuff needs the plain NXT wax, and it really is just a booster for the NXT, then I wouldn't recommend it as a quick express/spray-on wax. I estimated it took me at least twice as long to use than the Turtle Wax Express Wax. ANyone else out there just try this as a quick detail wax on its own?