Katie Holmes just gave her signature brunette hair a fresh, understated upgrade—and it’s the kind of effortless color refresh that’s about to be everywhere. Instead of a dramatic change, Holmes kept ...

A burnished caramel balayage adds a touch of color and warmth to Zoe Saldaña’s jet-black hair ... Olaplex No.1 and No.2 to keep Hadid’s hair healthy through every color transformation.