For best results, Gyeon Q²M LeatherCleaner Strong should be sprayed on to a PB Utility Towel and then wiped over the leather surfaces in straight lines using light to moderate pressure. Stubborn soiling may sometimes require a deeper clean using a Gyeon Q²M LeatherBrush, again using light to moderate pressure but this time working in tight circles. To finish off, wipe up any excess product with a PB Utility Towel and then leave the leather to dry fully before applying any form of protection.