I use Foaming Surface Wash with my Boss foam cannon. I mainly buy it because love that I can just screw the soap bottle directly to the cannon. The soap has a good amount of lubricity. I find that this soap works much better than the Black Fire foam soap I’ve tried. But I like Gyeon Bathe the best of all.

Cleans and foams well

If you put a couple of ounces of this into your foam cannon, you will get the thickest foams out of any car shampoo. Cleans well but not sure that it won't take off some of your wax/sealant.

Being designed for a foam cannon on a pressure washer I wasn't sure if it would work well on my foam gun, but figured what the heck. I mixed it up about 4oz to 12oz of water in the cannon, and put it on the heaviest setting it had. It made a level of foam I never seen come out of that gun before. I foamed one side of my SUV, let it sit for 2-3 minutes, and went to town with my chenille mitt. It went across the surface like it was glass smooth (and this is a very neglected SUV, life gets busy, don't judge hahaha). Afterwards I rinsed it down and did the outside. Looked better than anything from the commercial car washes around here could do.

I think this snow foam produces a lot of foam and seems to work very well. I can see the dirt drip down the vehicle after using it. It is a little pricy, but a little goes a long ways with this stuff.