Want a soft sheen to brighten up the counter.
Remove all of the items on the counter for a clutter-free surface. Take a clean, soft cloth and a gentle cleanser, such as a mix of 1 part water and 1 part vinegar, and wipe down the entire area. Use a vacuum to get into the corners and a toothbrush to flick out any leftover debris in corners, cracks and crevices. Soap and water work just as well, too, but just make sure to wash it thoroughly so no soap residue is left on the laminate. Take care for serious stains and use a serious cleaner. There are many countertop stain remover cleaners on the market that can get tough stains, such as coffee or grease. A paste of baking soda and vinegar or lemon juice can also get out stubborn stains.
There are many brands of laminate, including the longtime maker of the durable countertop material, Formica. The company has a long list of tried-and-true cleaners for its products. A Formica countertop cleaner can be used for any laminate. To make it shine, use a mild car wax in a light layer. This will bring out the faded color, as well as leave a protective coating to keep the laminate at its best all year long. Waterdrops is a car cleaner that uses little water, gets the countertop superiorly clean and dries quickly, which cuts down on streaking issues.
Have you thought about going to the Goodwill or Habitat for Humanity, etc and look at their assortment of available countertops. They are reasonably inexpensive and the workers will tell you how to replace it.
Don't add any painted on products will scratch and peel. Good ol car wax works great, just not long lasting.