Adam's Polishes Strip Car Wash Soap (16 oz) - Sealant & Wax Remover Shampoo Salt Remover, Presoak, & Acidic Wash | Thick Suds For Use Cleaning Kit, Foam Cannon, Foam Gun, Sponge, Mitt, Chamois

removing the surface minerals and then covering the remainder with a sealant is better than leaving it open to the elements even if you miss some spots. If you are unsure by your eye whether you got all the water spots take a pass with an acid wash shampoo like Adams Strip Wash before using the sealant.