IPA cleaner is isopropyl alcohol, known as "IPA," often used in paint renewal work to remove polishing paste residues. By spraying and wiping the surface with this product, you can "check" the impact of your work. Before applying any wax or coating, it is RECOMMENDED to perform degreasing. The recommended dilution is 1:1 with distilled water, yielding 2 liters of prepared solution. Detailer's tip: Using a spray bottle, spray the solution onto the part and wipe it off with a microfiber cloth.