Meguiar’s Convertible & Cabriolet Cleaner

Over £10 for one 450ml trigger bottle seems expensive, but this cleaner dealt with all kinds of marks and stains. And the mix’s high concentration means it goes a long way, too. It’s also easy to use. Simply spray it on, brush it in and rinse the surplus away with clean water. Meguiar’s offers a separate proofer, for restoring water resistance.