Duragloss Vinyl & Leather Dressing (UD) #201 - 2 PACK Duragloss Vinyl & Leather Dressing is a penetrating dressing that restores the like-new luster and texture to automotive leather and vinyl surfaces. Rather than leaving an artificial gloss on the surface of the material, Duragloss UD hydrates and replenishes leather and vinyl by absorbing into its pores.