Jacob Schwartz is a hair colorist and the hair color trend ambassador for Schwarzkopf. He's worked with a ton of big names, including Bella Hadid, Troye Sivan, and Sydney Sweeney.

Before taking the Grammy's stage for an iconic performance—featuring Julia Fox, Gabbriette, The Dare, and Alex Consani—Charli started a new hair trend, the glossy jet-black hair her colorist ...

In the world of beauty, what constitutes a hair transformation? Is it a dramatic cut? A natural texture debut? Or Sydney Sweeney going from bombshell blonde to jet-black lengths? Why, all of the ...