They're rich and decadent. “Amal Clooney’s signature chocolate brown is the epitome of timeless beauty,” says Giannetos. The warm tones and lighter pieces in this look are everything.

For warm undertones, rich shades like deep chocolate brown or warm chestnut can enhance your natural warmth, while cool undertones benefit from striking contrasts such as espresso or blue-black.

A burnished caramel balayage adds a touch of color and warmth to Zoe Saldaña’s jet-black hair. “Since the color starts lower, there's no need to worry about root touch-ups as often, making it ...