Pre wash seemed to work ok. Foam difficult to tell as the sprayer didn't seem to spray foam, more dribble! I've asked supplier for support but nothing of use in first response and failed to respond query. They do not seem to have a phone number either, so customer service almost non existent. I therefore wouldn't buy from them again.

Really impressed with how effective the pre-wash stage is using this kit. The citrus concentrate is strong enough to break down grime but doesn’t stain trims or plastics. Snow foam adds extra coverage and dwell, which helps lift dirt evenly. Overall, it feels like a well-balanced setup

Used this kit on a white car and it made a big difference to the lower panels. Much cleaner before wash

Foam thickness depends on setup, but cleaning power is there. Citrus pre-wash is strong

This kit has made my wash routine quicker and easier. Less dirt left behind before shampooing.