To restore vehicle trim, you need cleaning supplies like car wash, cleaner, detailing brush, soft brush, and vinyl spray cleaner. You also need a vinyl protector, microfiber pad, and trim restorer. First, thoroughly clean the trim, including undercarriage areas. If trim is still dull, apply a restoration product smoothly. Choose a trim protectant to prevent sun damage. Extremely damaged trim can be restored with dye, but be careful of overspray. A polymer-based black dye can also restore discolored trim and protect the vinyl surface. Always use a UV-protectant coating on restored trim to prevent fading.