If the glass is heavily soiled, begin by washing with a light shampoo or all-purpose-cleaner to remove the bulk of the grime before finishing with the glass cleaner.
For lightly soiled glass, you can proceed directly to application. Start by applying a fine mist of product to a manageable section of glass (3-4 spritzes is usually sufficient to do an average window, or half a windscreen.), and remove immediately using one of our unique glass cloths.
If contamination persists, repeat application, allowing the product to dwell and penetrate momentarily before wiping.