Jessica Chastain stepped out at the 2024 Emmy Awards with a hairstyle that not only stole the red carpet spotlight but reflected it, too... perfectly embracing the oh-so-popular 'glass hair' trend.

On 15 January, the actress took to the 75th Primetime ceremony with a style like no other. And while she stunned in a neon yellow Gucci gown complete with a tasselled trim and plunging neckline, for many, it was her glam beauty look — in particular her hair — that stole the show.

jessica chastain
Jay L. Clendenin//Getty Images

Now, what constitutes to said glass hair trend is the sleek shine and glossy texture of one's tresses, made even more so prevalent here with Jessica's pin-straight style.

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Luckily for us, Renato Campora – aka the hairstylist behind Jessica's 'do – shared the details behind what he used to achieve the finish on Instagram. "Using @hairrituelbysisley #hairrituelbysisley," he wrote in the caption of his post.

Although not specified, beauty experts are guessing that among the products used was the Sisley Precious Hair Care Oil - Glossiness and Nutrition, which uses a blend of four oils for gorgeous, glass-like hair.

Sisley-Paris Hair Rituel Precious Hair Care Oil Glossiness & Nutrition

Hair Rituel Precious Hair Care Oil Glossiness & Nutrition
Credit: Courtesy of brand

We love Jessica's latest look!