You can use the HB with whatever shaving product you prefer. I'm big on the HeadSlick mixed with a little Shave Secret oil OR the Bald Guyz Shave Gel mixed with the same oil.
Whatever product I use, I apply it with a good shaving brush..... and don't rinse the brush after your first application. It will still have plenty of good gel/foam in it for your second pass against the grain.