DuPont asphalt modifier is typically applied during the asphalt or bitumen modification process by incorporating it directly into the asphalt mix. This can be done through dry or wet blending methods. In the dry method, the modifier is mixed with aggregate before adding the asphalt binder. In the wet method, it is blended with the hot asphalt binder prior to mixing with aggregates. This ensures uniform distribution and enhances the performance characteristics of the final asphalt product.