You can get a subtle update with reddish brown hair with highlights. For the best results, you should place your new color near the crown of your head and descend toward the bottom. The goal is to achieve a soft ombre that contrasts with the natural color. You can even go for a burgundy or mahogany color if you’d like. In either case, you will want to use a light-color shampoo and conditioner to keep that healthy and free of product.