When paint cures, entrapped solvents evaporate from the base layer up through the paint. When this occurs sediment is left in the paint’s pores. All painted surfaces are exposed to a certain amount of sulphuric and nitric acids from the atmosphere. These cling to the paint in the forms of oxides. Toughseal’s scientifically developed Pre-Treatment Step 1 enters the pores of the painted surface and effectively removes all foreign impurities. This now allows Toughseal’s Acrylic plus P.T.F.E. Sealant Step 2 to bond chemically to the pores of the paintwork to seal and protect the now highly polished surface. As the treated surface cures, the P.T.F.E molecules elongate, interlocking with each other, resulting in tough bonded protective coating to the paint.