Avoid Corn Syrup - Grey hair
Someone mentioned that copper is needed for your hair to keep its color, and if you do a search, you'll find that's true. Americans especially are severely depleted of copper. I read somewhere that corn syrup sucks the copper out of your body, and corn syrup is in MANY of our processed foods, so thats no surprise. Blackstrap molasses, as someone else said, is one of the best possible natural sources of copper, and is a good supplement for many other problems as well. I'm nearing 60 and have only a few grey hairs, that started appearing after I hadn't taken any blackstrap molasses for quite a few months. When I take the molasses, my hair color slowly comes back. I just add it as a sweetener to tea, or make a tea of ACV and BSM. Takes a little getting used to, but I definitely look and feel better when I take it regularly.