As mentioned above, most users will apply their snow foam through a specific lance attachment for their pressure washer. These aren’t always universal, so make sure you choose one that’s compatible with yours. They usually have a bottle into which you’ll pour the snow foam concentrate. And depending on the size of your car, this may need to be refilled several times. For reasons of hygiene and safety, personal grooming products, cosmetics or items of intimate clothing cannot be returned.After testing several formulas, we found that the best snow foam is the Autoglym Polar Blast, which produces high-density foam that clings to the paintwork for far longer and effectively prewashes your car. However, if you want a snow foam that offers better value, the Pro-Kleen Cherry (as pictured above from our testing) is the best alternative. There are plenty of good pressure washers on the market. But if you’re on a tight budget, you can try a pump-operated pressurised spray bottle instead. Just bear in mind that you might not get the same spectacular results. Pretty much any car shampoo can be used in a pressure washer. We have never come across one that you can’t use in one. Polishing your car is a great way to fade small scratches and imperfections. Find out how with our handy guide. div>