When your crown is feeling more lackluster than lustrous, it's time to head to the salon and hit the refresh button. From root beer to rose brown, this year’s hair color trends for brunettes are taking dull brown strands from monotone to magnetic; and tortoiseshell, or écaille in French, is a shade that’s leaving brunettes feeling shiny and new with its rich blend of warm shades. (And yes, it’s inspired by your favorite tortoiseshell sunglasses.) Tortoiseshell hair is a mixture of dark shades and touches of warm caramel, honey, and gold. Somehow teetering a perfectly sun-kissed balance between dark and light, this shade often starts with a chocolate brown base and can use techniques like balayage, babylights, ombré, and shadow rooting to create a seamlessly blended finish that’s as low maintenance as you wish. So why not put a few strokes of honey here, a few ribbons of caramel there? It'll liven up those locks in no time. Check out these tortoiseshell hair color inspirations before your next salon trip.