Full Exterior Car Wash
A proper hand wash and a drive-through tunnel are not the same activity.
Tunnels rely on stiff brushes that have rubbed grit against thousands of cars before yours. That is why people who care about their paint stopped using them years ago.
The detailer hand-washes with foam, two buckets, and clean microfiber. Dirt gets lifted off the car instead of dragged across it like sandpaper.
The multi-step process matters because dirt is not all in one place.
Wheels and undercarriage need high-pressure water to dislodge brake dust and road grime baked on by heat. Body panels need gentle hand contact with paint-safe soap. Edges and trim need attention an automated system never bothers to give them.
By the time the foam rinses off, the car is not just clean-looking. It is actually clean, and ready for anything more advanced like clay, polish, or wax to bond properly.