Not sure of the brand I have. It's cherry snow foam. I bought 5L over a year ago and I've still got over 3/4 left
I put 10-15mm in the 1L lance bottle and top up with water.
Normally get 6 blankets of foam per bottle.
As Andrew said cover the car, let it dwell for 5mins+ and it will soak into the dirt, then good rinse.
Then cover with foam again and then wash car using 2bucket method and good quality mittens (again I use a cap full of snow foam in a bucket of hot water)
Then rinse the car and then dry using some dwarfs bath towels
(autoperfection super plush drying towels)
You can spray on a drying aid spray to give the paint a shine before drying if u want! I use Meguires Ultimate Detail Spray