Car-Chem Prep Panel Wipe is the step between polishing and protection. Car-Chem describes it as a degreasing, preparatory surface cleanser that removes oils, silicones and final residue from paintwork, leaving a streak-free, clean surface so last stage protection can bond better. We use it after machine polishing and before a wax, sealant or ceramic coating, working one cool panel at a time: mist the panel and a lint-free microfibre cloth, then wipe until the solution has fully evaporated. It also doubles as a glass cleaner, so the 500ml is a handy bottle for a detailing bag, while the 5L suits regular users refilling their own spray bottles. Pair it with plenty of clean, lint-free microfibre cloths.