Snow foam
Snow foam is a thick, clinging foam pre-wash applied through a foam cannon, used to soften and lift dirt off a car's paint before any wash mitt makes contact.
What it means
Snow foam is a pre-wash step. The detailer mixes a snow-foam shampoo with water in a foam cannon (a pressure-washer attachment that aerates the mix), then sprays the entire car with a thick layer of foam. The foam clings to the paint, dwells for a few minutes, and softens or releases road grime, light dirt, and dust before any cloth touches the surface. The car is then rinsed with a pressure washer, lifting most of the loosened dirt away before the contact wash even begins. The contact wash (with mitt and shampoo, in two buckets) then handles only the harder-stuck contamination. The whole sequence dramatically reduces the chance of dragging grit across the paint, which is the core cause of swirl marks. Snow foam alone does not replace a contact wash on a heavily soiled car, but it shifts the balance toward less mechanical contact, which is what protects coated and sensitive paint.
Why it matters in Singapore
Singapore's road grime is a mix of brake dust, urban dust, and tropical pollen and sap residue, all of which cling to paint between washes. A snow-foam pre-wash dissolves and lifts a significant fraction of this before any contact, which matters most for ceramic-coated cars and for any owner serious about keeping swirl marks off.
How Revol Carz handles this
Revol Carz uses a snow-foam pre-wash on detailed grooming sessions, especially before paint correction or ceramic coating prep. The foam softens contamination, the pressure rinse lifts most of it, and only the residual contamination needs the contact wash.