Kérastase brought its new, now-refillable hair oil Elixir Ultime to New York City’s Times Square. The brand unveiled an out-of-home campaign starring Global Brand Ambassador, actress Sydney Sweeney. “We are thrilled to unveil the new era of our icon, Elixir Ultime Oil, taking it to the streets – and screens – across the country with a campaign as captivating as our iconic oil’s new look and formula,” said Guillaume Duez, Kérastase US general manager. “Sydney Sweeney embodies th...