Snow Foam is designed to be used with a snow foam lance to help loosen dirt prior to contact washing
 
Directions of use:
add 100-200ml of product to a 1 litre snow foam lance bottle and fill the remainder with water 
apply the snow foam to the vehicle and allow it to dwell for up to 5 minutes - do not let the product dry on the surface
rinse the product of the vehicle before starting your contact wash