I have now the fourth or fifth bottle of the stuff, so can work quite easily. I have thus dipped the lower front grille and the rear diffuser attachment on the car and it looks very good. For that I have just carefully taped with masking tape and newspaper and deducted the masking tape again after the last layer Plasti Dip. The pressure washer keeps it standing. If times leave something you can fix it by spraying over it again.