En español | Hair color at 50 is always a work in progress. It never looks exactly the same month to month, and it never will. That's because everything (and I mean everything) affects it — from your shampoo and blow-dryer to your hairstyle and the formula your colorist is using. Whether your hair is gloriously gray, bold brunette, racy red or blazing blonde shimmering with highlights, it can turn boring, brassy or blah in a heartbeat — and chances are, it will. Here are 10 ways to keep your hair color going and glowing.