After going through the full correction process on my Black BMW M3, and coated with Swissvax Mystery the surface was flawless and very slick. Now, my question was which shampoo will be safe and gentle to use every week on my Swissvax wax coat to clean the surface without stripping or lessening the waxes protection. I found Adam's Car Wash to be very enjoyable to use but just TOO suddy and usually would noticeably lessen the beading after about 4 washes. Then I tried to use Swissvax Car Bathe as it would probably be the mildest soap to use on my Mystery coat. Well, yes it is very very mild but doesn't sud up at all, which took away the mystique of washing my car and using the suds. Then I just tried the 1Z perls shampoo yesterday, AND LIKE WOW!!!!! This shampoo does everything I want it to and like it says leaves a nice bit of depth! It suds up just enough, not a ton but enough to enjoy washing with it. I can wash about 2 panels, and the suds are still there before I rinse it off. It felt super slick when washing, and probably added to the wax if anything, like the label says it adds some protection which was evident because the car beaded stronger after the final rinse! This stuff is just amazing if your looking for a very mild and effective shampoo to use to maintain your wax finish! Thanks Phil for carrying such an outstanding product!!!!