Hello, dear community! My 96 Suzuki SWIFT has black, unpainted bumpers that look very matt and bleached after 13 years. I would like to help this one again to new shine and black freshness and have made me a little smart with regard to necessary helpers. I found out about the following product from SONAX: Sonax KunststoffNew. Link: http://www.sonax.at/…/katalog_product.php?… Has anyone had any experience with this product? Regrettably