Duragloss Total Performance Polish is a synthetic polymer formula. Super-tough coating forms a protective barrier which protect against acid rain, tree sap, bird droppings and other environmental pollutants. To get the maximum longevity out of Duragloss Total Performance Polish, apply a coat of Duragloss Polish Bonding Agent to the paint first. Allow it to dry to a haze but do not buff. Apply Duragloss Total Performance Polish on top of the haze and buff them both off at the same time with a soft microfiber towel. The PBA works as an epoxy to bond the Total Performance Polish to the paint for tough, durable polymer coating. This is a great combination of products for winter paint protection.