As your ride's exterior ages, rubber, plastic and vinyl exterior hardware of all colors will dry, crack, flake and deteriorate. This oxidation can be stopped and reversed with Mothers® Back-to-Black®, our favorite auto-care concoction.This trim treatment is great for all sorts of exterior hardware in all colors-bumpers, molding, louvers, window trim, vents, seals, skirts, door handles, wiper arms-anything that's plastic, rubber or vinyl. Apply Back-to-Black® to sun-burnt plastic, rubber and vinyl to revive the factory-new sheen, then re-treat that exterior hardware regularly. #06108, 8oz.