I've bought a zymol starter kit with the carbon wax and it came with a bottle of HD Cleanse.
As I understand it the HDC preps the body for the wax so the wax sticks better but is it really essential to use the HDC?
I tried it on one panel and it's a bugger to buff off and it took away the smoothness I had achieved using the 3M Rosa. I did the rest of the car without HDC and TBH didn't notice any downsides by not using the HDC but being the paranoid chap I am I'm wondering if I should go back and use the HDC.
I'd appreciate your thoughts